Archives For raising rivals’ cost

[TOTM: The following is part of a symposium by TOTM guests and authors on the 2020 Vertical Merger Guidelines. The entire series of posts is available here.

This post is authored by Margaret E. Slade (Professor Emeritus, Vancouver School of Economics, The University of British Columbia).]

A revision of the DOJ’s Non-Horizontal Merger Guidelines is long overdue and the Draft Vertical Merger Guidelines (“Guidelines”) takes steps in the right direction. However, the treatment of important issues can be uneven. For example, the discussions of market definition and shares are relatively thorough whereas the discussions of anti-competitive harm and pro-competitive efficiencies are more vague.

Market definition, market shares, and concentration

The Guidelines are correct in deferring to the Horizontal Merger Guidelines for most aspects of market definition, market shares, and market concentration. The relevant sections of the Horizontal Guidelines are not without problems. However, it would make no sense to use different methods and concepts to delineate horizontal markets that are involved in vertical mergers compared to those that are involved in horizontal mergers.  

One aspect of market definition, however, is new: the notion of a related product, which is a product that links the up and downstream firms. Such products might be inputs, distribution systems, or sets of customers. The Guidelines set thresholds of 20% for the related product’s share, as well as the parties’ shares, in the relevant market. 

Those thresholds are, of course, only indicative and mergers can be investigated when markets are smaller. In addition, mergers that fail to meet the share tests need not be challenged. It would therefore be helpful to have a list of factors that could be used to determine which mergers that fall below those thresholds are more likely to be investigated, and vice versa. For example, the EU Vertical Merger Guidelines list circumstances, such as the existence of significant cross-shareholding relationships, the fact that one of the firms is considered to be a maverick, and suspicion that coordination is ongoing, under which mergers that fall into the safety zones are more apt to be investigated.

Elimination of double marginalization and other efficiencies

Although the elimination of double marginalization (EDM) is a pricing externality that does not change unit costs, the Guidelines discuss EDM as the principal `efficiency’ or at least they have more to say about that factor. Furthermore, after discussing EDM, the Guidelines note that the full EDM benefit might not occur if the downstream firm cannot use the product or if the parties are already engaged in contracting. The first factor is obvious and the second implies that the efficiency is not merger specific. In practice, however, antitrust and regulatory policy has tended to apply the EDM argument uncritically, ignoring several key assumptions and issues.

The simple model of EDM relies on a setting in which there are two monopolists, one up and one downstream, each produces a single product, and production is subject to fixed proportions. This model predicts that welfare will increase after a vertical merger. If these assumptions are violated, however, the predictions change (as John Kwoka and I discuss in more detail here). For example, under variable proportions the unintegrated downstream firm can avoid some of the adverse effects of the inflated wholesale price by substituting away from use of that product, and the welfare implications are ambiguous. Moreover, managerial considerations such as independent pricing by divisions can lead to less-than-full elimination of double marginalization.  

With multi-product firms, the integrated firm’s average downstream prices need not fall and can even rise when double marginalization is eliminated. To illustrate, after EDM the products with eliminated margins become relatively more profitable to sell. This gives the integrated firm incentives to divert demand towards those products by increasing the prices of its products for which double marginalization was not eliminated. Moreover, under some circumstances, the integrated downstream price can also rise.

Since violations of the simple model are present in almost all cases, it would be helpful to include a more complete list of factors that cause the simple model — the one that predicts that EDM is always welfare improving — to fail.

Unlike the case of horizontal mergers, with vertical mergers, real productive efficiencies on the supply side are often given less attention. Those efficiencies, which include economies of scope, the ability to coordinate other aspects of the vertical chain such as inventories and distribution, and the expectation of productivity growth due to knowledge transfers, can be important

Moreover, organizational efficiencies, such as mitigating contracting, holdup, and renegotiation costs, facilitating specific investments in physical and human capital, and providing appropriate incentives within firms, are usually ignored. Those efficiencies can be difficult to evaluate. Nevertheless, they should not be excluded from consideration on that basis.

Equilibrium effects

On page 4, the Guidelines suggest that merger simulations might be used to quantify unilateral price effects of vertical mergers. However, they have nothing to say about the pitfalls. Unfortunately, compared to horizontal merger simulations, there are many more assumptions that are required to construct vertical simulation models and thus many more places where they can go wrong. In particular, one must decide on the number and identity of the rivals; the related products that are potentially disadvantaged; the geographic markets in which foreclosure or raising rivals’ costs are likely to occur; the timing of moves: whether up and downstream prices are set simultaneously or the upstream firm is a first mover; the link between up and downstream: whether bargaining occurs or the upstream firm makes take-it-or-leave-it offers; and, as I discuss below, the need to evaluate the raising rivals’ costs (RRC) and elimination of double marginalization (EDM) effects simultaneously.

These choices can be crucial in determining model predictions. Indeed, as William Rogerson notes (in an unpublished 2019 draft paper, Modeling and Predicting the Competitive Effects of Vertical Mergers Due to Changes in Bargaining Leverage: The Bargaining Leverage Over Rivals (BLR) Effect), when moves are simultaneous, there is no RRC effect. This is true because, when negotiating over input prices, firms take downstream prices as given. 

On the other hand, bargaining introduces a new competitive effect — the bargaining leverage effect — which arises because, after a vertical merger, the disagreement payoff is higher. Indeed, the merged firm recognizes the increased profit that its downstream integrated division will earn if the input is withheld from the rival. In contrast, the upstream firm’s disagreement payoff is irrelevant when it has all of the bargaining power.

Finally, on page 5, the Guidelines describe something that sounds like a vertical upward pricing pressure (UPP) index, analogous to the GUPPI that has been successfully employed in evaluating horizontal mergers. However, extending the GUPPI to a vertical context is not straightforward

To illustrate, Das Varma and Di Stefano show that a sequential process can be very misleading, where a sequential process consists of first calculating the RRC effect and, if that effect is substantial, evaluating the EDM effect and comparing the two. The problem is that the two effects are not independent of one another. Moreover, when the two are determined simultaneously, compared to the sequential RRC, the equilibrium RRC can increase or decrease and can even change sign (i.e., lowering rival costs).What these considerations mean is that vertical merger simulations have to be carefully crafted to fit the markets that are susceptible to foreclosure and that a one-size-fits-all model can be very misleading. Furthermore, if a simpler sequential screening process is used, careful consideration must be given to whether the markets of interest satisfy the assumptions under which that process will yield approximately reasonable results.

[TOTM: The following is part of a symposium by TOTM guests and authors on the 2020 Vertical Merger Guidelines. The entire series of posts is available here.

This post is authored by William J. Kolasky (Partner, Hughes Hubbard & Reed; former Deputy Assistant Attorney General, DOJ Antitrust Division), and Philip A. Giordano (Partner, Hughes Hubbard & Reed LLP).

[Kolasky & Giordano: The authors thank Katherine Taylor, an associate at Hughes Hubbard & Reed, for her help in researching this article.]

On January 10, the Department of Justice (DOJ) withdrew the 1984 DOJ Non-Horizontal Merger Guidelines, and, together with the Federal Trade Commission (FTC), released new draft 2020 Vertical Merger Guidelines (“DOJ/FTC draft guidelines”) on which it seeks public comment by February 26.[1] In announcing these new draft guidelines, Makan Delrahim, the Assistant Attorney General for the Antitrust Division, acknowledged that while many vertical mergers are competitively beneficial or neutral, “some vertical transactions can raise serious concern.” He went on to explain that, “The revised draft guidelines are based on new economic understandings and the agencies’ experience over the past several decades and better reflect the agencies’ actual practice in evaluating proposed vertical mergers.” He added that he hoped these new guidelines, once finalized, “will provide more clarity and transparency on how we review vertical transactions.”[2]

While we agree with the DOJ and FTC that the 1984 Non-Horizontal Merger Guidelines are now badly outdated and that a new set of vertical merger guidelines is needed, we question whether the draft guidelines released on January 10, will provide the desired “clarity and transparency.” In our view, the proposed guidelines give insufficient recognition to the wide range of efficiencies that flow from most, if not all, vertical mergers. In addition, the guidelines fail to provide sufficiently clear standards for challenging vertical mergers, thereby leaving too much discretion in the hands of the agencies as to when they will challenge a vertical merger and too much uncertainty for businesses contemplating a vertical merger. 

What is most troubling is that this did not need to be so. In 2008, the European Commission, as part of its merger process reform initiative, issued an excellent set of non-horizontal merger guidelines that adopt basically the same analytical framework as the new draft guidelines for evaluating vertical mergers.[3] The EU guidelines, however, lay out in much more detail the factors the Commission will consider and the standards it will apply in evaluating vertical transactions. That being so, it is difficult to understand why the DOJ and FTC did not propose a set of vertical merger guidelines that more closely mirror those of the European Commission, rather than try to reinvent the wheel with a much less complete set of guidelines.

Rather than making the same mistake ourselves, we will try to summarize the EU vertical mergers and to explain why we believe they are markedly better than the draft guidelines the DOJ and FTC have proposed. We would urge the DOJ and FTC to consider revising their draft guidelines to make them more consistent with the EU vertical merger guidelines. Doing so would, among other things, promote greater convergence between the two jurisdictions, which is very much in the interest of both businesses and consumers in an increasingly global economy.

The principal differences between the draft joint guidelines and the EU vertical merger guidelines

1. Acknowledgement of the key differences between horizontal and vertical mergers

The EU guidelines begin with an acknowledgement that, “Non-horizontal mergers are generally less likely to significantly impede effective competition than horizontal mergers.” As they explain, this is because of two key differences between vertical and horizontal mergers.

  • First, unlike horizontal mergers, vertical mergers “do not entail the loss of direct competition between the merging firms in the same relevant market.”[4] As a result, “the main source of anti-competitive effect in horizontal mergers is absent from vertical and conglomerate mergers.”[5]
  • Second, vertical mergers are more likely than horizontal mergers to provide substantial, merger-specific efficiencies, without any direct reduction in competition. The EU guidelines explain that these efficiencies stem from two main sources, both of which are intrinsic to vertical mergers. The first is that, “Vertical integration may thus provide an increased incentive to seek to decrease prices and increase output because the integrated firm can capture a larger fraction of the benefits.”[6] The second is that, “Integration may also decrease transaction costs and allow for a better co-ordination in terms of product design, the organization of the production process, and the way in which the products are sold.”[7]

The DOJ/FTC draft guidelines do not acknowledge these fundamental differences between horizontal and vertical mergers. The 1984 DOJ non-horizontal guidelines, by contrast, contained an acknowledgement of these differences very similar to that found in the EU guidelines. First, the 1984 guidelines acknowledge that, “By definition, non-horizontal mergers involve firms that do not operate in the same market. It necessarily follows that such mergers produce no immediate change in the level of concentration in any relevant market as defined in Section 2 of these Guidelines.”[8] Second, the 1984 guidelines acknowledge that, “An extensive pattern of vertical integration may constitute evidence that substantial economies are afforded by vertical integration. Therefore, the Department will give relatively more weight to expected efficiencies in determining whether to challenge a vertical merger than in determining whether to challenge a horizontal merger.”[9] Neither of these acknowledgements can be found in the new draft guidelines.

These key differences have also been acknowledged by the courts of appeals for both the Second and D.C. circuits in the agencies’ two most recent litigated vertical mergers challenges: Fruehauf Corp. v. FTC in 1979[10] and United States v. AT&T in 2019.[11] In both cases, the courts held, as the D.C. Circuit explained in AT&T, that because of these differences, the government “cannot use a short cut to establish a presumption of anticompetitive effect through statistics about the change in market concentration” – as it can in a horizontal merger case – “because vertical mergers produce no immediate change in the relevant market share.”[12] Instead, in challenging a vertical merger, “the government must make a ‘fact-specific’ showing that the proposed merger is ‘likely to be anticompetitive’” before the burden shifts to the defendants “to present evidence that the prima facie case ‘inaccurately predicts the relevant transaction’s probable effect on future competition,’ or to ‘sufficiently discredit’ the evidence underlying the prima facie case.”[13]

While the DOJ/FTC draft guidelines acknowledge that a vertical merger may generate efficiencies, they propose that the parties to the merger bear the burden of identifying and substantiating those efficiencies under the same standards applied by the 2010 Horizontal Merger Guidelines. Meeting those standards in the case of a horizontal merger can be very difficult. For that reason, it is important that the DOJ/FTC draft guidelines be revised to make it clear that before the parties to a vertical merger are required to establish efficiencies meeting the horizontal merger guidelines’ evidentiary standard, the agencies must first show that the merger is likely to substantially lessen competition, based on the type of fact-specific evidence the courts required in both Fruehauf and AT&T.

2. Safe harbors

Although they do not refer to it as a “safe harbor,” the DOJ/FTC draft guidelines state that, 

The Agencies are unlikely to challenge a vertical merger where the parties to the merger have a share in the relevant market of less than 20 percent, and the related product is used in less than 20 percent of the relevant market.[14] 

If we understand this statement correctly, it means that the agencies may challenge a vertical merger in any case where one party has a 20% share in a relevant market and the other party has a 20% or higher share of any “related product,” i.e., any “product or service” that is supplied by the other party to firms in that relevant market. 

By contrast, the EU guidelines state that,

The Commission is unlikely to find concern in non-horizontal mergers . . . where the market share post-merger of the new entity in each of the markets concerned is below 30% . . . and the post-merger HHI is below 2,000.[15] 

Both the EU guidelines and the DOJ/FTC draft guidelines are careful to explain that these statements do not create any “legal presumption” that vertical mergers below these thresholds will not be challenged or that vertical mergers above those thresholds are likely to be challenged.

The EU guidelines are more consistent than the DOJ/FTC draft guidelines both with U.S. case law and with the actual practice of both the DOJ and FTC. It is important to remember that the raising rivals’ costs theory of vertical foreclosure was first developed nearly four decades ago by two young economists, David Scheffman and Steve Salop, as a theory of exclusionary conduct that could be used against dominant firms in place of the more simplistic theories of vertical foreclosure that the courts had previously relied on and which by 1979 had been totally discredited by the Chicago School for the reasons stated by the Second Circuit in Fruehauf.[16] 

As the Second Circuit explained in Fruehauf, it was “unwilling to assume that any vertical foreclosure lessens competition” because 

[a]bsent very high market concentration or some other factor threatening a tangible anticompetitive effect, a vertical merger may simply realign sales patterns, for insofar as the merger forecloses some of the market from the merging firms’ competitors, it may simply free up that much of the market, in which the merging firm’s competitors and the merged firm formerly transacted, for new transactions between the merged firm’s competitors and the merging firm’s competitors.[17] 

Or, as Robert Bork put it more colorfully in The Antitrust Paradox, in criticizing the FTC’s decision in A.G. Spalding & Bros., Inc.,[18]:

We are left to imagine eager suppliers and hungry customers, unable to find each other, forever foreclosed and left languishing. It would appear the commission could have cured this aspect of the situation by throwing an industry social mixer.[19]

Since David Scheffman and Steve Salop first began developing their raising rivals’ cost theory of exclusionary conduct in the early 1980s, gallons of ink have been spilled in legal and economic journals discussing and evaluating that theory.[20] The general consensus of those articles is that while raising rivals’ cost is a plausible theory of exclusionary conduct, proving that a defendant has engaged in such conduct is very difficult in practice. It is even more difficult to predict whether, in evaluating a proposed merger, the merged firm is likely to engage in such conduct at some time in the future. 

Consistent with the Second Circuit’s decision in Fruehauf and with this academic literature, the courts, in deciding cases challenging exclusive dealing arrangements under either a vertical foreclosure theory or a raising rivals’ cost theory, have generally been willing to consider a defendant’s claim that the alleged exclusive dealing arrangements violated section 1 of the Sherman Act only in cases where the defendant had a dominant or near-dominant share of a highly concentrated market — usually meaning a share of 40 percent or more.[21] Likewise, all but one of the vertical mergers challenged by either the FTC or DOJ since 1996 have involved parties that had dominant or near-dominant shares of a highly concentrated market.[22] A majority of these involved mergers that were not purely vertical, but in which there was also a direct horizontal overlap between the two parties.

One of the few exceptions is AT&T/Time Warner, a challenge the DOJ lost in both the district court and the D.C. Circuit.[23] The outcome of that case illustrates the difficulty the agencies face in trying to prove a raising rivals’ cost theory of vertical foreclosure where the merging firms do not have a dominant or near-dominant share in either of the affected markets.

Given these court decisions and the agencies’ historical practice of challenging vertical mergers only between companies with dominant or near-dominant shares in highly concentrated markets, we would urge the DOJ and FTC to consider raising the market share threshold below which it is unlikely to challenge a vertical merger to at least 30 percent, in keeping with the EU guidelines, or to 40 percent in order to make the vertical merger guidelines more consistent with the U.S. case law on exclusive dealing.[24] We would also urge the agencies to consider adding a market concentration HHI threshold of 2,000 or higher, again in keeping with the EU guidelines.

3. Standards for applying a raising rivals’ cost theory of vertical foreclosure

Another way in which the EU guidelines are markedly better than the DOJ/FTC draft guidelines is in explaining the factors taken into consideration in evaluating whether a vertical merger will give the parties both the ability and incentive to raise their rivals’ costs in a way that will enable the merged entity to increase prices to consumers. Most importantly, the EU guidelines distinguish clearly between input foreclosure and customer foreclosure, and devote an entire section to each. For brevity, we will focus only on input foreclosure to show why we believe the more detailed approach the EU guidelines take is preferable to the more cursory discussion in the DOJ/FTC draft guidelines.

In discussing input foreclosure, the EU guidelines correctly distinguish between whether a vertical merger will give the merged firm the ability to raise rivals’ costs in a way that may substantially lessen competition and, if so, whether it will give the merged firm an incentive to do so. These are two quite distinct questions, which the DOJ/FTC draft guidelines unfortunately seem to lump together.

The ability to raise rivals’ costs

The EU guidelines identify four important conditions that must exist for a vertical merger to give the merged firm the ability to raise its rivals’ costs. First, the alleged foreclosure must concern an important input for the downstream product, such as one that represents a significant cost factor relative to the price of the downstream product. Second, the merged entity must have a significant degree of market power in the upstream market. Third, the merged entity must be able, by reducing access to its own upstream products or services, to affect negatively the overall availability of inputs for rivals in the downstream market in terms of price or quality. Fourth, the agency must examine the degree to which the merger may free up capacity of other potential input suppliers. If that capacity becomes available to downstream competitors, the merger may simple realign purchase patterns among competing firms, as the Second Circuit recognized in Fruehauf.

The incentive to foreclose access to inputs: 

The EU guidelines recognize that the incentive to foreclose depends on the degree to which foreclosure would be profitable. In making this determination, the vertically integrated firm will take into account how its supplies of inputs to competitors downstream will affect not only the profits of its upstream division, but also of its downstream division. Essentially, the merged entity faces a trade-off between the profit lost in the upstream market due to a reduction of input sales to (actual or potential) rivals and the profit gained from expanding sales downstream or, as the case may be, raising prices to consumers. This trade-off is likely to depend on the margins the merged entity obtains on upstream and downstream sales. Other things constant, the lower the margins upstream, the lower the loss from restricting input sales. Similarly, the higher the downstream margins, the higher the profit gain from increasing market share downstream at the expense of foreclosed rivals.

The EU guidelines recognize that the incentive for the integrated firm to raise rivals’ costs further depends on the extent to which downstream demand is likely to be diverted away from foreclosed rivals and the share of that diverted demand the downstream division of the integrated firm can capture. This share will normally be higher the less capacity constrained the merged entity will be relative to non-foreclosed downstream rivals and the more the products of the merged entity and foreclosed competitors are close substitutes. The effect on downstream demand will also be higher if the affected input represents a significant proportion of downstream rivals’ costs or if it otherwise represents a critical component of the downstream product.

The EU guidelines recognize that the incentive to foreclose actual or potential rivals may also depend on the extent to which the downstream division of the integrated firm can be expected to benefit from higher price levels downstream as a result of a strategy to raise rivals’ costs. The greater the market shares of the merged entity downstream, the greater the base of sales on which to enjoy increased margins. However, an upstream monopolist that is already able to fully extract all available profits in vertically related markets may not have any incentive to foreclose rivals following a vertical merger. Therefore, the ability to extract available profits from consumers does not follow immediately from a very high market share; to come to that conclusion requires a more thorough analysis of the actual and future constraints under which the monopolist operates.

Finally, the EU guidelines require the Commission to examine not only the incentives to adopt such conduct, but also the factors liable to reduce, or even eliminate, those incentives, including the possibility that the conduct is unlawful. In this regard, the Commission will consider, on the basis of a summary analysis: (i) the likelihood that this conduct would be clearly be unlawful under Community law, (ii) the likelihood that this illegal conduct could be detected, and (iii) the penalties that could be imposed.

Overall likely impact on effective competition: 

Finally, the EU guidelines recognize that a vertical merger will raise foreclosure concerns only when it would lead to increased prices in the downstream market. This normally requires that the foreclosed suppliers play a sufficiently important role in the competitive process in the downstream market. In general, the higher the proportion of rivals that would be foreclosed in the downstream market, the more likely the merger can be expected to result in a significant price increase in the downstream market and, therefore, to significantly impede effective competition. 

In making these determinations, the Commission must under the EU guidelines also assess the extent to which a vertical merger may raise barriers to entry, a criterion that is also found in the 1984 DOJ non-horizontal merger guidelines but is strangely missing from the DOJ/FTC draft guidelines. As the 1984 guidelines recognize, a vertical merger can raise entry barriers if the anticipated input foreclosure would create a need to enter at both the downstream and the upstream level in order to compete effectively in either market.

* * * * *

Rather than issue a set of incomplete vertical merger guidelines, we would urge the DOJ and FTC to follow the lead of the European Commission and develop a set of guidelines setting out in more detail the factors the agencies will consider and the standards they will use in evaluating vertical mergers. The EU non-horizontal merger guidelines provide an excellent model for doing so.

[1] U.S. Department of Justice & Federal Trade Commission, Draft Vertical Merger Guidelines, available at (hereinafter cited as “DOJ/FTC draft guidelines”).

[2] U.S. Department of Justice, Office of Public Affairs, “DOJ and FTC Announce Draft Vertical Merger Guidelines for Public Comment,” Jan. 10, 2020, available at

[3] See European Commission, Guidelines on the assessment of non-horizontal mergers under the Council Regulation on the control of concentrations between undertakings (2008) (hereinafter cited as “EU guidelines”), available at

[4] Id. at § 12.

[5] Id.

[6] Id. at § 13.

[7] Id. at § 14. The insight that transactions costs are an explanation for both horizontal and vertical integration in firms first occurred to Ronald Coase in 1932, while he was a student at the London School of Economics. See Ronald H. Coase, Essays on Economics and Economists 7 (1994). Coase took five years to flesh out his initial insight, which he then published in 1937 in a now-famous article, The Nature of the Firm. See Ronald H. Coase, The Nature of the Firm, Economica 4 (1937). The implications of transactions costs for antitrust analysis were explained in more detail four decades later by Oliver Williamson in a book he published in 1975. See Oliver E. William, Markets and Hierarchies: Analysis and Antitrust Implications (1975) (explaining how vertical integration, either by ownership or contract, can, for example, protect a firm from free riding and other opportunistic behavior by its suppliers and customers). Both Coase and Williamson later received Nobel Prizes for Economics for their work recognizing the importance of transactions costs, not only in explaining the structure of firms, but in other areas of the economy as well. See, e.g., Ronald H. Coase, The Problem of Social Cost, J. Law & Econ. 3 (1960) (using transactions costs to explain the need for governmental action to force entities to internalize the costs their conduct imposes on others).

[8] U.S. Department of Justice, Antitrust Division, 1984 Merger Guidelines, § 4, available at

[9] EU guidelines, at § 4.24.

[10] Fruehauf Corp. v. FTC, 603 F.2d 345 (2d Cir. 1979).

[11] United States v. AT&T, Inc., 916 F.2d 1029 (D.C. Cir. 2019).

[12] Id. at 1032; accord, Fruehauf, 603 F.2d, at 351 (“A vertical merger, unlike a horizontal one, does not eliminate a competing buyer or seller from the market . . . . It does not, therefore, automatically have an anticompetitive effect.”) (emphasis in original) (internal citations omitted).

[13] AT&T, 419 F.2d, at 1032 (internal citations omitted).

[14] DOJ/FTC draft guidelines, at 3.

[15] EU guidelines, at § 25.

[16] See Steven C. Salop & David T. Scheffman, Raising Rivals’ Costs, 73 AM. ECON. REV. 267 (1983).

[17] Fruehauf, supra note11, 603 F.2d at 353 n.9 (emphasis added).

[18] 56 F.T.C. 1125 (1960).

[19] Robert H. Bork, The Antitrust Paradox: A Policy at War with Itself 232 (1978).

[20] See, e.g., Alan J. Meese, Exclusive Dealing, the Theory of the Firm, and Raising Rivals’ Costs: Toward a New Synthesis, 50 Antitrust Bull., 371 (2005); David T. Scheffman and Richard S. Higgins, Twenty Years of Raising Rivals Costs: History, Assessment, and Future, 12 George Mason L. Rev.371 (2003); David Reiffen & Michael Vita, Comment: Is There New Thinking on Vertical Mergers, 63 Antitrust L.J. 917 (1995); Thomas G. Krattenmaker & Steven Salop, Anticompetitive Exclusion: Raising Rivals’ Costs to Achieve Power Over Price, 96 Yale L. J. 209, 219-25 (1986).

[21] See, e.g., United States v. Microsoft, 87 F. Supp. 2d 30, 50-53 (D.D.C. 1999) (summarizing law on exclusive dealing under section 1 of the Sherman Act); id. at 52 (concluding that modern case law requires finding that exclusive dealing contracts foreclose rivals from 40% of the marketplace); Omega Envtl, Inc. v. Gilbarco, Inc., 127 F.3d 1157, 1162-63 (9th Cir. 1997) (finding 38% foreclosure insufficient to make out prima facie case that exclusive dealing agreement violated the Sherman and Clayton Acts, at least where there appeared to be alternate channels of distribution).

[22] See, e.g., United States, et al. v. Comcast, 1:11-cv-00106 (D.D.C. Jan. 18, 2011) (Comcast had over 50% of MVPD market), available at; United States v. Premdor, Civil No.: 1-01696 (GK) (D.D.C. Aug. 3, 2002) (Masonite manufactured more than 50% of all doorskins sold in the U.S.; Premdor sold 40% of all molded doors made in the U.S.), available at

[23] See United States v. AT&T, Inc., 916 F.2d 1029 (D.C. Cir. 2019).

[24] See Brown Shoe Co. v. United States, 370 U.S. 294, (1962) (relying on earlier Supreme Court decisions involving exclusive dealing and tying claims under section 3 of the Clayton Act for guidance as to what share of a market must be foreclosed before a vertical merger can be found unlawful under section 7).

[TOTM: The following is part of a symposium by TOTM guests and authors on the 2020 Vertical Merger Guidelines. The entire series of posts is available here.

This post is authored by Jonathan E. Nuechterlein (Partner, Sidley Austin LLP; former General Counsel, FTC; former Deputy General Counsel, FCC).

[Nuechterlein: I represented AT&T in United States v. AT&T, Inc. (“AT&T/Time Warner”), and this essay is based in part on comments I prepared on AT&T’s behalf for the FTC’s recent public hearings on Competition and Consumer Protection in the 21st Century. All views expressed here are my own.]

The draft Vertical Merger Guidelines (“Draft Guidelines”) might well leave ordinary readers with the misimpression that U.S. antitrust authorities have suddenly come to view vertical integration with a jaundiced eye. Such readers might infer from the draft that vertical mergers are a minefield of potential competitive harms; that only sometimes do they “have the potential to create cognizable efficiencies”; and that such efficiencies, even when they exist, often are not “of a character and magnitude” to keep the merger from becoming “anticompetitive.” (Draft Guidelines § 8, at 9). But that impression would be impossible to square with the past forty years of U.S. enforcement policy and with exhaustive empirical work confirming the largely beneficial effects of vertical integration. 

The Draft Guidelines should reflect those realities and thus should incorporate genuine limiting principles — rooted in concerns about two-level market power — to cabin their highly speculative theories of harm. Without such limiting principles, the Guidelines will remain more a theoretical exercise in abstract issue-spotting than what they purport to be: a source of genuine guidance for the public

1. The presumptive benefits of vertical integration

Although the U.S. antitrust agencies (the FTC and DOJ) occasionally attach conditions to their approval of vertical mergers, they have litigated only one vertical merger case to judgment over the past forty years: AT&T/Time Warner. The reason for that paucity of cases is neither a lack of prosecutorial zeal nor a failure to understand “raising rivals’ costs” theories of harm. Instead, in the words of the FTC’s outgoing Bureau of Competition chief, Bruce Hoffman, the reason is the “broad consensus in competition policy and economic theory that the majority of vertical mergers are beneficial because they reduce costs and increase the intensity of interbrand competition.” 

Two exhaustive papers confirm that conclusion with hard empirical facts. The first was published in the International Journal of Industrial Organization in 2005 by FTC economists James Cooper, Luke Froeb, Dan O’Brien, and Michael Vita, who surveyed “multiple studies of vertical mergers and restraints” and “found only one example where vertical integration harmed consumers, and multiple examples where vertical integration unambiguously benefited consumers.” The second paper is a 2007 analysis in the Journal of Economic Literature co-authored by University of Michigan Professor Francine LaFontaine (who served from 2014 to 2015 as Director of the FTC’s Bureau of Economics) and Professor Margaret Slade of the University of British Columbia. Professors LaFontaine and Slade “did not have a particular conclusion in mind when [they] began to collect the evidence,” “tried to be fair in presenting the empirical regularities,” and were “therefore somewhat surprised at what the weight of the evidence is telling us.” They found that:

[U]nder most circumstances, profit-maximizing vertical-integration decisions are efficient, not just from the firms’ but also from the consumers’ points of view. Although there are isolated studies that contradict this claim, the vast majority support it. (p. 680) 

Vertical mergers have this procompetitive track record for two basic reasons. First, by definition, they do not eliminate a competitor or increase market concentration in any market, and they pose fewer competitive concerns than horizontal mergers for that reason alone. Second, as Bruce Hoffman noted, “while efficiencies are often important in horizontal mergers, they are much more intrinsic to a vertical transaction” and “come with a more built-in likelihood of improving competition than horizontal mergers.”

It is widely accepted that vertical mergers often impose downward pricing pressure by eliminating double margins. Beyond that, as the Draft Guidelines observe (at § 8), vertical mergers can also play an indispensable role in “eliminate[ing] contracting frictions,” “streamlin[ing] production, inventory management, or distribution,” and “creat[ing] innovative products in ways that would have been hard to achieve through arm’s length contracts.”

2. Harm to competitors, harm to competition, and the need for limiting principles

Vertical mergers do often disadvantage rivals of the merged firm. For example, a distributor might merge with one of its key suppliers, achieve efficiencies through the combination, and pass some of the savings through to consumers in the form of lower prices. The firm’s distribution rivals will lose profits if they match the price cut and will lose market share to the merged firm if they do not. But that outcome obviously counts in favor of supporting, not opposing, the merger because it makes consumers better off and because “[t]he antitrust laws… were enacted for the protection of competition not competitors.” (Brunswick v Pueblo Bowl-O-Mat). 

This distinction between harm to competition and harm to competitors is fundamental to U.S. antitrust law. Yet key passages in the Draft Guidelines seem to blur this distinction

For example, one passage suggests that a vertical merger will be suspect if the merged firm might “chang[e] the terms of … rivals’ access” to an input, “one or more rivals would [then] lose sales,” and “some portion of those lost sales would be diverted to the merged firm.” Draft Guidelines § 5.a, at 4-5. Of course, the Guidelines’ drafters would never concede that they wish to vindicate the interests of competitors qua competitors. They would say that incremental changes in input prices, even if they do not structurally alter the competitive landscape, might nonetheless result in slightly higher overall consumer prices. And they would insist that speculation about such slight price effects should be sufficient to block a vertical merger. 

That was the precise theory of harm that DOJ pursued in AT&T/Time Warner, which involved a purely vertical merger between a video programmer (Time Warner) and a pay-TV distributor (AT&T/DirecTV). DOJ ultimately conceded that Time Warner was unlikely to withhold programming from (“foreclose”) AT&T’s pay-TV rivals. Instead, using a complex economic model, DOJ tried to show that the merger would increase Time Warner’s bargaining power and induce AT&T’s pay-TV rivals to pay somewhat higher rates for Time Warner programming, some portion of which the rivals would theoretically pass through to their own retail customers. At the same time, DOJ conceded that post-merger efficiencies would cause AT&T to lower its retail rates compared to the but-for world without the merger. DOJ nonetheless asserted that the aggregate effect of the pay-TV rivals’ price increases would exceed the aggregate effect of AT&T’s own price decrease. Without deciding whether such an effect would be sufficient to block the merger — a disputed legal issue — the courts ruled for the merging parties because DOJ could not substantiate its factual prediction that the merger would lead to programming price increases in the first place. 

It is unclear why DOJ picked this, of all cases, as its vehicle for litigating its first vertical merger case in decades. In an archetypal raising-rivals’-costs case, familiar from exclusive dealing law, the defendant forecloses its rivals by depriving them of a critical input or distribution channel and so marginalizes them in the process that it can profitably raise its own retail prices (see, e.g., McWane; Microsoft). AT&T/Time Warner could hardly have been further afield from that archetypal case. Again, DOJ conceded both that the merged firm would not foreclose rivals at all and that the merger would induce the firm to lower its retail prices below what it would charge if the merger were blocked. The draft Guidelines appear to double down on this odd strategy and portend more cases predicated on the same attenuated concerns about mere “chang[es in] the terms of … rivals’ access” to inputs, unaccompanied by any alleged structural changes in the competitive landscape

Bringing such cases would be a mistake, both tactically and doctrinally

“Changes in the terms of inputs” are a constant fact of life in nearly every market, with or without mergers, and have almost never aroused antitrust scrutiny. For example, whenever a firm enters into a long-term preferred-provider agreement with a new business partner in lieu of merging with it, the firm will, by definition, deal on less advantageous terms with the partner’s rivals than it otherwise would. That outcome is virtually never viewed as problematic, let alone unlawful, when it is accomplished through such long-term contracts. The government does not hire a team of economists to pore over documents, interview witnesses, and run abstruse models on whether the preferred-provider agreement can be projected, on balance, to produce incrementally higher downstream prices. There is no obvious reason why the government should treat such preferred provider arrangements differently if they arise through a vertical merger rather than a vertical contract — particularly given the draft Guidelines’ own acknowledgement that vertical mergers produce pro-consumer efficiencies that would be “hard to achieve through arm’s length contracts.” (Draft Guidelines § 8, at 9).

3. Towards a more useful safe harbor

Quoting then-Judge Breyer, the Supreme Court once noted that “antitrust rules ‘must be clear enough for lawyers to explain them to clients.’” That observation rings doubly true when applied to a document by enforcement officials purporting to “guide” business decisions. Firms contemplating a vertical merger need more than assurance that their merger will be cleared two years hence if their economists vanquish the government’s economists in litigation about the fine details of Nash bargaining theory. Instead, firms need true limiting principles, which identify the circumstances where any theory of harm would be so attenuated that litigating to block the merger is not worth the candle, particularly given the empirically validated presumption that most vertical mergers are pro-consumer.

The Agencies cannot meet the need for such limiting principles with the proposed “safe harbor” as it is currently phrased in the draft Guidelines: 

The Agencies are unlikely to challenge a vertical merger where the parties to the merger have a share in the relevant market of less than 20 percent, and the related product is used in less than 20 percent of the relevant market.” (Draft Guidelines § 3, at 3). 

This anodyne assurance, with its arbitrarily low 20 percent thresholds phrased in the conjunctive, seems calculated more to preserve the agencies’ discretion than to provide genuine direction to industry. 

Nonetheless, the draft safe harbor does at least point in the right direction because it reflects a basic insight about two-level market power: vertical mergers are unlikely to create competitive concerns unless the merged firm will have, or could readily obtain, market power in both upstream and downstream markets. (See, e.g., Auburn News v. Providence Journal (“Where substantial market power is absent at any one product or distribution level, vertical integration will not have an anticompetitive effect.”)) This point parallels tying doctrine, which, like vertical merger analysis, addresses how vertical arrangements can affect competition across adjacent markets. As Justice O’Connor noted in Jefferson Parish, tying arrangements threaten competition 

primarily in the rare cases where power in the market for the tying product is used to create additional market power in the market for the tied product.… But such extension of market power is unlikely, or poses no threat of economic harm, unless…, [among other conditions, the seller has] power in the tying-product market… [and there is] a substantial threat that the tying seller will acquire market power in the tied-product market.

As this discussion suggests, the “20 percent” safe harbor in the draft Guidelines misses the mark in three respects

First, as a proxy for the absence of market power, 20 percent is too low: courts have generally refused to infer market power when the seller’s market share was below 30% and sometimes require higher shares. Of course, market share can be a highly overinclusive measure of market power, in that many firms with greater than a 30% share will lack market power. But it is nonetheless appropriate to use market share as a screen for further analysis.

Second, the draft’s safe harbor appears illogically in the conjunctive, applying only “where the parties to the merger have a share in the relevant market of less than 20 percent, and the related product is used in less than 20 percent of the relevant market.” That “and” should be an “or” because, again, vertical arrangements can be problematic only if a firm can use existing market power in a “related products” market to create or increase market power in the “relevant market.” 

Third, the phrase “the related product is used in less than 20 percent of the relevant market” is far too ambiguous to serve a useful role. For example, the “related product” sold by a merging upstream firm could be “used by” 100 percent of downstream buyers even though the firm’s sales account for only one percent of downstream purchases of that product if the downstream buyers multi-home — i.e., source their goods from many different sellers of substitutable products. The relevant proxy for “related product” market power is thus not how many customers “use” the merging firm’s product, but what percentage of overall sales of that product (including reasonable substitutes) it makes. 

Of course, this observation suggests that, when push comes to shove in litigation, the government must usually define two markets: not only (1) a “relevant market” in which competitive harm is alleged to occur, but also (2) an adjacent “related product” market in which the merged firm is alleged to have market power. Requiring such dual market definition is entirely appropriate. Ultimately, any raising-rivals’-costs theory relies on a showing that a vertically integrated firm has some degree of market power in a “related products” market when dealing with its rivals in an adjacent “relevant market.” And market definition is normally an inextricable component of a litigated market power analysis.

If these three changes are made, the safe harbor would read: 

The Agencies are unlikely to challenge a vertical merger where the parties to the merger have a share in the relevant market of less than 30 percent, or the related product sold by one of the parties accounts for less than 30 percent of the overall sales of that related product, including reasonable substitutes.

Like all safe harbors, this one would be underinclusive (in that many mergers outside of the safe harbor are unobjectionable) and may occasionally be overinclusive. But this substitute language would be more useful as a genuine safe harbor because it would impose true limiting principles. And it would more accurately reflect the ways in which market power considerations should inform vertical analysis—whether of contractual arrangements or mergers.

[TOTM: The following is part of a symposium by TOTM guests and authors on the 2020 Vertical Merger Guidelines. The entire series of posts is available here.

This post is authored by Herbert Hovenkamp (James G. Dinan University Professor, University of Pennsylvania School of Law and the Wharton School).]

In its 2019 AT&T/Time-Warner merger decision the D.C. Circuit Court of Appeals mentioned something that antitrust enforcers have known for years: We need a new set of Agency Guidelines for vertical mergers. The vertical merger Guidelines were last revised in 1984 at the height of Chicago School hostility toward harsh antitrust treatment of vertical restraints. In January, 2020, the Agencies issued a set of draft vertical merger Guidelines for comment. At this writing the Guidelines are not final, and the Agencies are soliciting comments on the draft and will be holding at least two workshops to discuss them before they are finalized.

1. What the Guidelines contain

a. “Relevant markets” and “related products”

The draft Guidelines borrow heavily from the 2010 Horizontal Merger Guidelines concerning general questions of market definition, entry barriers, partial acquisitions, treatment of efficiencies and the failing company defense. Both the approach to market definition and the necessity for it are treated somewhat differently than for horizontal mergers, however. First, the Guidelines do not generally speak of vertical mergers as linking two different “markets,” such as an upstream market and a downstream market. Instead, they use the term “relevant market” to speak of the market that is of competitive concern, and the term “related product” to refer to some product, service, or grouping of sales that is either upstream or downstream from this market:

A related product is a product or service that is supplied by the merged firm, is vertically related to the products and services in the relevant market, and to which access by the merged firm’s rivals affects competition in the relevant market.

So, for example, if a truck trailer manufacturer should acquire a maker of truck wheels and the market of concern was trailer manufacturing, the Agencies would identify that as the relevant market and wheels as the “related product.” (Cf. Fruehauf Corp. v. FTC).

b. 20% market share threshold

The Guidelines then suggest (§3) that the Agencies would be

unlikely to challenge a vertical merger where the parties to the merger have a share in the relevant market of less than 20 percent and the related product is used in less than 20 percent of the relevant market.

The choice of 20% is interesting but quite defensible as a statement of enforcement policy, and very likely represents a compromise between extreme positions. First, 20% is considerably higher than the numbers that supported enforcement during the 1960s and earlier (see, e.g., Brown Shoe (less than 4%); Bethlehem Steel (10% in one market; as little as 1.8% in another market)). Nevertheless, it is also considerably lower than the numbers that commentators such as Robert Bork would have approved (see Robert H. Bork, The Antitrust Paradox: A Policy at War with Itself at pp. 219, 232-33; see also Herbert Hovenkamp, Robert Bork and Vertical Integration: Leverage, Foreclosure, and Efficiency), and lower than the numbers generally used to evaluate vertical restraints such as tying or exclusive dealing (see Jefferson Parish (30% insufficient); see also 9 Antitrust Law ¶1709 (4th ed. 2018)).

The Agencies do appear to be admonished by the Second Circuit’s Fruehauf decision, now 40 years old but nevertheless the last big, fully litigated vertical merger case prior to AT&T/Time Warner: foreclosure numbers standing alone do not mean very much, at least not unless they are very large. Instead, there must be some theory about how foreclosure leads to lower output and higher prices. These draft Guidelines provide several examples and illustrations.

Significantly, the Guidelines do not state that they will challenge vertical mergers crossing the 20% threshold, but only that they are unlikely to challenge mergers that fall short of it. Even here, they leave open the possibility of challenge in unusual situations where the share numbers may understate the concern, such as where the related product “is relatively new,” and its share is rapidly growing. The Guidelines also note (§3) that if the merging parties serve different geographic areas, then the relevant share may not be measured by a firm’s gross sales everywhere, but rather by its shares in the other firm’s market in which anticompetitive effects are being tested. 

These numbers as well as the qualifications seem quite realistic, particularly in product differentiated markets where market shares tend to understate power, particularly in vertical distribution.

c. Unilateral effects

The draft Vertical Guidelines then divide the universe of adverse competitive effects into Unilateral Effects (§5) and Coordinated Effects (§7). The discussion of unilateral effects is based on bargaining theory similar to that used in the treatment of unilateral effects from horizontal mergers in the 2010 Horizontal Merger Guidelines. Basically, a price increase is more profitable if the losses that accrue to one merging participant are affected by gains to the merged firm as a whole. These principles have been a relatively uncontroversial part of industrial organization economics and game theory for decades. The Draft Vertical Guidelines recognize both foreclosure and raising rivals’ costs as concerns, as well as access to competitively sensitive information (§5).

 The Draft Guidelines note:

A vertical merger may diminish competition by allowing the merged firm to profitably weaken or remove the competitive constraint from one or more of its actual or potential rivals in the relevant market by changing the terms of those rivals’ access to one or more related products. For example, the merged firm may be able to raise its rivals’ costs by charging a higher price for the related products or by lowering service or product quality. The merged firm could also refuse to supply rivals with the related products altogether (“foreclosure”).

Where sufficient data are available, the Agencies may construct economic models designed to quantify the likely unilateral price effects resulting from the merger…..

The draft Guidelines note that these models need not rely on a particular market definition. As in the case of unilateral effects horizontal mergers, they compare the firms’ predicted bargaining position before and after the merger, assuming that the firms seek maximization of profits or value. They then query whether equilibrium prices in the post-merger market will be higher than those prior to the merger. 

In making that determination the Guidelines suggest (§4a) that the Agency could look at several factors, including:

  1. The merged firm’s foreclosure of, or raising costs of, one or more rivals would cause those rivals to lose sales (for example, if they are forced out of the market, if they are deterred from innovating, entering or expanding, or cannot finance these activities, or if they have incentives to pass on higher costs through higher prices), or to otherwise compete less aggressively for customers’ business;
  2. The merged firm’s business in the relevant market would benefit (for example if some portion of those lost sales would be diverted to the merged firm);
  3. Capturing this benefit through merger may make foreclosure, or raising rivals’ costs, profitable even though it would not have been profitable prior to the merger; and,
  4. The magnitude of likely foreclosure or raising rivals’ costs is not de minimis such that it would substantially lessen competition.

This approach, which reflects important developments in empirical economics, does entail that there will be increasing reliance on economic experts to draft, interpret, and dispute the relevant economic models.

In a brief section the Draft Guidelines also state a concern for mergers that will provide a firm with access or control of sensitive business information that could be used anticompetitively. The Guidelines do not provide a great deal of elaboration on this point.

d. Elimination of double marginalization

The Vertical Guidelines also have a separate section (§6) discussing an offset for elimination of double marginalization. They note what has come to be the accepted economic wisdom that elimination of double marginalization can result in higher output and lower prices when it applies, but it does not invariably apply.

e. Coordinated effects

Finally, the draft Guidelines note (§7) a concern that certain vertical mergers may enable collusion. This could occur, for example, if the merger eliminated a maverick buyer who formerly played rival sellers off against one another. In other cases the merger may give one of the partners access to information that could be used to facilitate collusion or discipline cartel cheaters, offering this example:

Example 7: The merger brings together a manufacturer of components and a maker of final products. If the component manufacturer supplies rival makers of final products, it will have information about how much they are making, and will be better able to detect cheating on a tacit agreement to limit supplies. As a result the merger may make the tacit agreement more effective.

2. Conclusion: An increase in economic sophistication

These draft Guidelines are relatively short, but that is in substantial part because they incorporate by reference many of the relevant points from the 2010 Guidelines for horizontal mergers. In any event, they may not provide as much detail as federal courts might hope for, but they are an important step toward specifying the increasingly economic approaches that the agencies take toward merger analysis, one in which direct estimates play a larger role, with a comparatively reduced role for more traditional approaches depending on market definition and market share.

They also avoid both rhetorical extremes, which are being too hostile or too sanguine about the anticompetitive potential of vertical acquisitions. While the new draft Guidelines leave the overall burden of proof with the challenger, they have clearly weakened the presumption that vertical mergers are invariably benign, particularly in highly concentrated markets or where the products in question are differentiated. Second, the draft Guidelines emphasize approaches that are more economically sophisticated and empirical. Consistent with that, foreclosure concerns are once again taken more seriously.

The 2020 Draft Joint Vertical Merger Guidelines:

What’s in, what’s out — and do we need them anyway?

February 6 & 7, 2020

Welcome! We’re delighted to kick off our two-day blog symposium on the recently released Draft Joint Vertical Merger Guidelines from the DOJ Antitrust Division and the Federal Trade Commission. 

If adopted by the agencies, the guidelines would mark the first time since 1984 that U.S. federal antitrust enforcers have provided official, public guidance on their approach to the increasingly important issue of vertical merger enforcement. 

As previously noted, the release of the draft guidelines was controversial from the outset: The FTC vote to issue the draft was mixed, with a dissent from Commissioner Slaughter, an abstention from Commissioner Chopra, and a concurring statement from Commissioner Wilson.

As the antitrust community gears up to debate the draft guidelines, we have assembled an outstanding group of antitrust experts to weigh in with their initial thoughts on the guidelines here at Truth on the Market. We hope this symposium will provide important insights and stand as a useful resource for the ongoing discussion.

The scholars and practitioners who will participate in the symposium are:

  • Timothy J. Brennan (Professor, Public Policy and Economics, University of Maryland; former Chief Economist, FCC; former economist, DOJ Antitrust Division)
  • Steven Cernak (Partner, Bona Law PC; former antitrust counsel, GM)
  • Eric Fruits (Chief Economist, ICLE; Professor of Economics, Portland State University)
  • Herbert Hovenkamp (James G. Dinan University Professor of Law, University of Pennsylvania)
  • Jonathan M. Jacobson (Partner, Wilson Sonsini Goodrich & Rosati) and Kenneth Edelson (Associate, Wilson Sonsini Goodrich & Rosati)
  • William J. Kolasky (Partner, Hughes Hubbard & Reed; former Deputy Assistant Attorney General, DOJ Antitrust Division) and Philip A. Giordano (Partner, Hughes Hubbard & Reed LLP)
  • Geoffrey A. Manne (President & Founder, ICLE; Distinguished Fellow, Northwestern University Center on Law, Business, and Economics) and Kristian Stout (Associate Director, ICLE)
  • Jonathan E. Nuechterlein (Partner, Sidley Austin LLP; former General Counsel, FTC; former Deputy General Counsel, FCC)
  • Sharis A. Pozen (Partner, Clifford Chance; former Vice President of Global Competition Law and Policy, GE; former Acting Assistant Attorney General, DOJ Antitrust Division), Timothy Cornell (Partner, Clifford Chance), Brian Concklin (Counsel, Clifford Chance), and Michael Van Arsdall (Counsel, Clifford Chance)
  • Jan Rybnicek (Counsel, Freshfields Bruckhaus Deringer; former attorney adviser to Commissioner Joshua D. Wright, FTC)
  • Steven C. Salop (tent.) (Professor of Economics and Law, Georgetown University; former Associate Director, FTC Bureau of Economics)
  • Scott A. Sher (Partner, Wilson Sonsini Goodrich & Rosati) and Matthew McDonald (Associate, Wilson Sonsini Goodrich & Rosati)
  • Margaret Slade (Professor Emeritus, Vancouver School of Economics, University of British Columbia)
  • Gregory Werden (former Senior Economic Counsel, DOJ Antitrust Division) and Luke M. Froeb (William C. Oehmig Chair in Free Enterprise and Entrepreneurship, Vanderbilt University; former Chief Economist, DOJ Antitrust Division; former Chief Economist, FTC)
  • Lawrence J. White (Robert Kavesh Professor of Economics, New York University; former Chief Economist, DOJ Antitrust Division)
  • Joshua D. Wright (University Professor of Law, George Mason University; former Commissioner, FTC), Douglas H. Ginsburg (Senior Circuit Judge, US Court of Appeals for the DC Circuit; Professor of Law, George Mason University; former Assistant Attorney General, DOJ Antitrust Division), Tad Lipsky (Assistant Professor of Law, George Mason University; former Acting Director, FTC Bureau of Competition; former chief antitrust counsel, Coca-Cola; former Deputy Assistant Attorney General, DOJ Antitrust Division), and John M. Yun (Associate Professor of Law, George Mason University; former Acting Deputy Assistant Director, FTC Bureau of Economics)

The first of the participants’ initial posts will appear momentarily, with additional posts appearing throughout the day today and tomorrow. We hope to generate a lively discussion, and expect some of the participants to offer follow up posts and/or comments on their fellow participants’ posts — please be sure to check back throughout the day and be sure to check the comments. We hope our readers will join us in the comments, as well.

Once again, welcome!

Truth on the Market is pleased to announce its next blog symposium:

The 2020 Draft Joint Vertical Merger Guidelines: What’s in, what’s out — and do we need them anyway?

February 6 & 7, 2020

Symposium background

On January 10, 2020, the DOJ Antitrust Division and the Federal Trade Commission released Draft Joint Vertical Merger Guidelines for public comment. If adopted by the agencies, the guidelines would mark the first time since 1984 that U.S. federal antitrust enforcers have provided official, public guidance on their approach to the increasingly important issue of vertical merger enforcement: 

“Challenging anticompetitive vertical mergers is essential to vigorous enforcement. The agencies’ vertical merger policy has evolved substantially since the issuance of the 1984 Non-Horizontal Merger Guidelines, and our guidelines should reflect the current enforcement approach. Greater transparency about the complex issues surrounding vertical mergers will benefit the business community, practitioners, and the courts,” said FTC Chairman Joseph J. Simons.

As evidenced by FTC Commissioner Slaughter’s dissent and FTC Commissioner Chopra’s abstention from the FTC’s vote to issue the draft guidelines, the topic is a contentious one. Similarly, as FTC Commissioner Wilson noted in her concurring statement, the recent FTC hearing on vertical mergers demonstrated that there is a vigorous dispute over what new guidelines should look like (or even if the 1984 Non-Horizontal Guidelines should be updated at all).

The agencies have announced two upcoming workshops to discuss the draft guidelines and have extended the comment period on the draft until February 26.

In advance of the workshops and the imminent discussions over the draft guidelines, we have asked a number of antitrust experts to weigh in here at Truth on the Market: to preview the coming debate by exploring the economic underpinnings of the draft guidelines and their likely role in the future of merger enforcement at the agencies, as well as what is in the guidelines and — perhaps more important — what is left out.  

Beginning the morning of Thursday, February 6, and continuing during business hours through Friday, February 7, Truth on the Market (TOTM) and the International Center for Law & Economics (ICLE) will host a blog symposium on the draft guidelines. 

Symposium participants

As in the past (see examples of previous TOTM blog symposia here), we’ve lined up an outstanding and diverse group of scholars to discuss these issues, including:

  • Timothy J. Brennan (Professor, Public Policy and Economics, University of Maryland; former Chief Economist, FCC; former economist, DOJ Antitrust Division)
  • Steven Cernak (Partner, Bona Law PC; former antitrust counsel, GM)
  • Luke M. Froeb (William C. Oehmig Chair in Free Enterprise and Entrepreneurship, Vanderbilt University; former Chief Economist, DOJ Antitrust Division; former Chief Economist, FTC)
  • Eric Fruits (Chief Economist, ICLE; Professor of Economics, Portland State University)
  • Douglas H. Ginsburg (Senior Circuit Judge, US Court of Appeals for the DC Circuit; Professor of Law, George Mason University; former Assistant Attorney General, DOJ Antitrust Division)
  • Herbert Hovenkamp (James G. Dinan University Professor of Law, University of Pennsylvania)
  • Jonathan M. Jacobson (Partner, Wilson Sonsini Goodrich & Rosati)
  • William J. Kolasky (Partner, Hughes Hubbard & Reed; former Deputy Assistant Attorney General, DOJ Antitrust Division)
  • Tad Lipsky (Assistant Professor of Law, George Mason University; former Acting Director, FTC Bureau of Competition; former chief antitrust counsel, Coca-Cola; former Deputy Assistant Attorney General, DOJ Antitrust Division) 
  • Geoffrey A. Manne (President & Founder, ICLE; Distinguished Fellow, Northwestern University Center on Law, Business, and Economics)
  • Jonathan E. Nuechterlein (Partner, Sidley Austin LLP; former General Counsel, FTC; former Deputy General Counsel, FCC)
  • Sharis A. Pozen (Partner, Clifford Chance; former Vice President of Global Competition Law and Policy, GE; former Acting Assistant Attorney General, DOJ Antitrust Division) 
  • Jan Rybnicek (Counsel, Freshfields Bruckhaus Deringer; former attorney adviser to Commissioner Joshua D. Wright, FTC)
  • Steven C. Salop (tent.) (Professor of Economics and Law, Georgetown University; former Associate Director, FTC Bureau of Economics)
  • Scott A. Sher (Partner, Wilson Sonsini Goodrich & Rosati)
  • Margaret Slade (Professor Emeritus, Vancouver School of Economics, University of British Columbia)
  • Kristian Stout (Associate Director, ICLE)
  • Gregory Werden (former Senior Economic Counsel, DOJ Antitrust Division)
  • Lawrence J. White (Robert Kavesh Professor of Economics, New York University; former Chief Economist, DOJ Antitrust Division)
  • Joshua D. Wright (University Professor of Law, George Mason University; former Commissioner, FTC)
  • John M. Yun (Associate Professor of Law, George Mason University; former Acting Deputy Assistant Director, FTC Bureau of Economics)

We want to thank all of these excellent panelists for agreeing to take time away from their busy schedules to participate in this symposium. We are hopeful that this discussion will provide invaluable insight and perspective on the Draft Joint Vertical Merger Guidelines.

Look for the first posts starting Thursday, February 6!

Guest post by Steve Salop, responding to Dan’s post and Thom’s post on the appropriate liability rule for loyalty discounts.

I want to clarify some of the key issues in Commissioner Wright’s analysis of Exclusive Dealing and Loyalty Discounts as part of the raising rivals’ costs (“RRC”) paradigm. I never thought that I would have to defend Wright against Professors Lambert and Crane. But, it appears that rigorous antitrust analysis sometimes makes what some would view as strange bedfellows.

In my view, there should not be a safe harbor price-cost test used for loyalty discounts. Nor should these discounts be treated as conclusively (per se) illegal if the defendant fails the price-cost test. Either way, the test is a formalistic and unreliable screen. To explain these conclusions, and why I think the proponents of the screen are taking too narrow approach to these issues, I want to start with some discussion of the legal and economic frameworks.

In my view, there are two overarching antitrust legal paradigms for exclusionary conduct – predatory pricing and raising rivals’ costs (RRC), and conduct that falls into the RRC paradigm generally raises greater antitrust concerns. (For further details, see my 2006 Antitrust L.J. article, “Exclusionary Conduct, Effect on Consumers, and the Flawed Profit-Sacrifice Standard.”) Commissioner Wright also takes this approach in his speech of identifying and distinguishing the two paradigms.

This raises the question of which framework is better suited for addressing exclusive dealing and loyalty discounts (that is, where the conduct is not pled in the complaint as predatory pricing). Commissioner Wright’s speech articulates the view that theories of harm alleging RRC/foreclosure should be analyzed under exclusive dealing law, which is more consistent with the raising rivals’ costs approach, not under predatory pricing law (i.e., with its safe harbor for prices above cost). (Incidentally, I don’t read his speech as saying that he has abandoned Brooke Group for predatory pricing allegations. For example, it seems clear that he would support a price-cost test in a case alleging that a loyalty discount harmed competition via predatory pricing rather than RRC/foreclosure.)

To understand which legal framework – raising rivals’ costs/exclusive dealing versus predatory pricing/price-cost test – is most relevant for analyzing the relevant competitive issues, I want to begin with a primer on RRC theories of foreclosure. This will also hopefully bring everyone closer on the economics.

Input Foreclosure and Customer Foreclosure

There are two types of foreclosure theories within the RRC paradigm — “input foreclosure” and “customer foreclosure.” Both are relevant for evaluating exclusive dealing and loyalty discounts. The input foreclosure theory says that the ED literally “raises rivals’ costs” by foreclosing a rival’s access to a critical input subject to ED. The customer foreclosure theory says that ED literally “reduces rivals’ revenues” by foreclosing a rival’s access to a sufficient customer base and thereby drives the rival out of business or marginalizes it as a competitor (i.e., where it lacks the ability or incentive to move effectively beyond a niche position or to invest to grow).

Commissioner Wright’s speech tended to merge the two variants. But, it is useful to distinguish between them. (I think that this is one source of Professor Lambert being “baffled” by the speech, and more generally, is a source of confusion among commentators that leads to unnecessary disagreements.)

In the simplest presentation, one might say that customer foreclosure concerns are raised primarily by exclusive dealing with customers, while input foreclosure concerns are raised primarily by exclusive dealing with input suppliers. But, as noted below, both concerns may arise in the same case, and especially so where the “customers” are distributors rather than final consumers, and the “input” is distribution services.

Analysis of exclusive dealing (ED) often invokes the customer foreclosure theory. For example, Lorain Journal may be analyzed as customer foreclosure. However, input foreclosure is also highly relevant for analyzing ED because exclusive dealing often involves inputs. For example, Judge Posner’s famous JTC Petroleum cartel opinion can be interpreted in this way, if there were solely vertical agreements.

Cases where manufacturers have ED arrangements with wholesale or retail distributors might be thought to fall into the customer foreclosure theory because the distributors can be seen as customers of the manufacturer. However, distributors also can be seen as providing an input to the manufacturer, “distribution services.” For example, a supermarket or drug store provides shelf space to a manufacturer. If the manufacturer (say, unilaterally) sets resale prices, then the difference between this resale price and the wholesale price is the effective input price.

One reason why the input foreclosure/customer foreclosure distinction is important involves the proper roles of minimum viable scale (MVS) and minimum efficient scale (MES). The customer foreclosure theory may involve a claim that the rival likely will be driven below MVS and exit Or it may involve a claim that the rival will be driven below MES, where its costs will be so much higher or its demand so much lower that it will be marginalized as a competitor.

By contrast, and this is the key point, input foreclosure does not focus on whether the rival likely will be driven below MVS. Even if the rival remains viable, if its costs are higher, it will be led to raise the prices charged to consumers, which will cause consumer harm. And prices will not be raised only in the future. The recoupment can be simultaneous.

Another reason for the importance of the distinction is the role of the “foreclosure rate,” which often is the focus in customer foreclosure analysis. For input foreclosure, the key foreclosure issue is not the fraction of distribution input suppliers or capacity that is foreclosed, but rather whether the foreclosure will raise the rival’s distribution costs. That can occur even if a single distributor is foreclosed, if the exclusivity changes the market structure in the input market or if that distributor was otherwise critical. (For example, see Krattenmaker and Salop, “Anticompetitive Exclusion.”)

At the same time, it is important to note that the input/customer foreclosure distinction is not a totally bright line difference in many real world cases. A given case can raise both concerns. In addition, customer foreclosure sometimes can raise rivals costs, and input foreclosure sometimes (but not always) can cause exit.
While input foreclosure can succeed even if the rival remains viable in the market, in more extreme scenarios, significantly higher costs inflicted on the rival could drive the rival to fall below minimum viable scale, and thereby cause it to exit. I think that this is one way in which unnecessary disagreements have occurred. Commentators might erroneously focus only this more extreme scenario and overlook the impact of the exclusives or near-exclusives on the rival’s distribution costs.

Note also that customer foreclosure can raise a rival’s costs when there are economies of scale in variable costs. For this reason, even if the rival does not exit or is not marginalized, it nonetheless may become a weaker competitor as a result of the exclusivity or loyalty discount.

These points also help to explain why neither a price-cost test nor the foreclosure rate will provide sufficient reliable evidence for either customer foreclosure or input foreclosure, which I turn to next.

(For further discussion of the distinction between input foreclosure and customer foreclosure, see Riordan and Salop, Evaluating Vertical Mergers: A Post-Chicago Approach, 63 ANTITRUST L.R. 513(1995). See also the note on O’Neill v Coca Cola in Andrew Gavil, William Kovacic and Jonathan Baker, Antitrust Law in Perspective: Cases, Concepts and Problems in Competition Policy (2d ed.) at 868-69. For analysis of Lorain Journal as customer foreclosure, see Gavil et. al at 593-97.)

The Inappropriateness of a Dispositive Price-Cost Test

A price-cost test obviously is not relevant for evaluating input foreclosure concerns, even where the input is distribution services. Even if the foreclosure involves bidding up the price of the input, it can succeed in permitting the firm to achieve or maintain market power, despite the fact that the firm does not bid to the point that its costs exceed its price. (In this regard, Weyerhaeuser was a case of “predatory overbuying,” not “raising rivals’ cost overbuying.” The allegation was that Weyerhaeuser would gain market power in the timber input market, not the lumber output market.)

Nor is a price-cost test the critical focus for assessing customer foreclosure theories of competitive harm. (By the way, I think we all agree that the relevant price-cost test involves a comparison of the incremental revenue and incremental cost of the “contestable volume” at issue for the loyalty discount. So I will not delve into that issue.)

First, and most fundamentally, the price-cost test is premised on the erroneous idea that only equally efficient competitors are worth protecting. In other words, the price-cost requires the premise that the antitrust laws only protect consumers against competitive harm arising from conduct that could have excluded an equally efficient competitor. This premise makes absolutely no economic sense. One simple illustrative example is a monopolist raising the costs of a less efficient potential competitor to destroy its entry into the market. Suppose that monopolist has marginal cost of $50 and a monopoly price of $100. Suppose that there is the potential entrant has costs of $75. If the entry were to occur, the market price would fall. Entry of the less efficient rival imposes a competitive constraint on the monopolist. Thus, the entry clearly would benefit consumers. (And, it clearly often would raise total welfare as well.) It is hard to see why antitrust should permit this type of exclusionary conduct.

It is also unlikely that antitrust law would allow this conduct. For example, Lorain Journal is probably pretty close to this hypothetical. WEOL likely was not equally efficient. The hypothetical probably also fits Microsoft pretty well.

Second, the price-cost test does not make economic sense in the case of the equally efficient rival either. Even if the competitor is equally efficient, bidding for exclusives or near-exclusives through loyalty discounts often does not take place on a level playing field. There are several reasons for this. One reason is that the dominant firm may tie up customers or input providers before the competitors even arrive on the scene or are in a position to counterbid. A second reason is that the exclusive may be worth more to the dominant firm because it will allow it to maintain market power, whereas the entrant would only be able to obtain more competitive profits. In this sense, the dominant firm is “purchasing market power” as well as purchasing distribution. (This point is straightforward to explain with an example. Suppose that the dominant firm is earning monopoly profits of $200, which would be maintained if it deters the entry of the new competitor. Suppose that successful entry by the equally efficient competitor would lead to the dominant firm and the entrant both earning profits of $70. In this example, the entrant would be unwilling to bid more than $70 for the distribution. But, the dominant firm would be willing to bid up to $130, the difference between its monopoly profits of $200 and the duopoly profits of $70.) A third reason is that customers may not be willing to take the risk that the entry will fail, where failure can occur not because the entrant’s product is inferior but simply because other customers take the exclusive deal from the dominant firm. In this case, a fear that the entrant would fail could become a self-fulfilling prophecy because the customers cannot coordinate their responses to the dominant firms’ offer. Lorain Journal may provide an illustrative example of this self-fulfilling prophecy phenomenon. This last point highlights a more general point Commissioner Wright made in his speech — that successful and harmful RRC does not require a below-cost price (net of discounts). When distributors cannot coordinate their responses to the dominant firm’s offer, a relatively small discount might be all that is required to purchase exclusion. Thus, while large discounts might accompany RRC conduct, that need not be the case. These latter reasons also explain why there can be successful foreclosure even when contracts have short duration.

Third, as noted above, customer foreclosure may raise rivals’ costs when there are economies of scale. The higher costs of the foreclosed rivals are not well accounted for by the price-cost test.

Fourth, as stressed by Joe Farrell, the price-cost test ignores the fact that loyalty discounts triggered by market share may deter a customer’s purchases from a rival that do not even come at the expense of the dominant firm. (For example, suppose in light of the discounts, the customer is purchasing 90 units from the dominant firm and 10 from the rival in order to achieve a “reward” that comes from purchasing 90% from the dominant firm. Now suppose that entrant offers a new product that would lead the customer to wish to continue to purchase 90 units from the dominant firm but now purchase 15 units from the rival. The purchase of these additional 5 units from the rival does not come at the expense of the dominant firm. Yet, even if the entrant were to offer the 5 units at cost, these purchases would be deterred because the customer would fall below the 90% trigger for the reward.) In this way, the market share discount can directly reduce output.

Fifth, the price-cost test assumes that the price decreases will be passed on to final consumers. This may be the clear where the exclusives or loyalty discounts are true discounts given to final consumers. But, it may not be the case where the dominant firm is acquiring the loyalty from input suppliers, including distributors who then resell to final consumers. The loyalty discounts often involve lump sum payments, which raises questions about pass-on, at least in the short-run.

Finally, it is important to stress that the price-cost test for loyalty discounts assumes that price actually represents a true discount. I expect that this assumption is the starting point for commentators who give priority to the price-cost test. However, the price may not represent a true discount in fact, or the size of the discount may turn out to be smaller than it appears after the “but-for world” is evaluated. That is, the proponents of a price-cost test have the following type of scenario in mind. The dominant firm is initially charging the monopoly price of $100. In the face of competition, the dominant firm offers a lower price of (say) $95 to customers that will accept exclusivity, and the customers accept the exclusivity in order to obtain the $5 discount. (To illustrate, suppose that absent the exclusive, the customers would purchase 90 units from the dominant firm at $100 for total revenue of $9000. With the exclusive, they purchase 100 units at a price of $95 for total revenue of $9500.
Thus, the dominant firm earns incremental revenue of $500 on the 10 incremental units, or $50 per unit. If the dominant firm’s costs are $50 or less, it will pass the price-cost test.) But, consider next the following alternative scenario. The dominant firm offers the original $100 price to those customers that will accept exclusivity, and sets a higher “penalty” price of $105 to customers that purchase non-exclusively from the competitor. In this latter scenario, the $5 discount similarly may drive customers to accept the exclusive. These prices would lead to a similar outcome of the price-cost test. (To illustrate, suppose that absent the exclusive, the customers would purchase 90 units from the dominant firm at $105 for total revenue of $9450. With the exclusive, they purchase 100 units at a price of $100 for total revenue of $10,000. Thus, the dominant firm earns revenue of $550 on the 10 incremental units, or $55 per unit. Here, the dominant firm will pass the price-cost test, if its costs are $55 or less.) However, in this latter scenario, it is noteworthy that the use of the “penalty” price eliminates any benefits to consumers. This issue seems to be overlooked by Crane and Lambert. (For further details of the role of the penalty price in the context of bundled discounts, see Barry Nalebuff’s articles on Exclusionary Bundling and the articles of Greenlee, Reitman and Sibley.)

* * *

For all these reasons, treating loyalty discounts as analogous to predatory pricing and thereby placing over-reliance on a price-cost test represents a formalistic and unreliable antitrust approach. (It is ironic that Commissioner Wright was criticized by Professor Lambert for being formalistic, when the facts are the opposite.)

This analysis is not to say that the court should be indifferent to the lower prices, where there is a true discount. To the contrary, lower prices passed-on would represent procompetitive efficiency benefits. But, the potential for lower prices passed-on does not provide a sufficient basis for adopting a price-cost safe harbor test for loyalty discount allegations, even ones that can be confidently characterized as purely plain vanilla customer foreclosure with no effects on rivals’ costs.

Thus, the price-cost test should be one relevant evidentiary factor. But, it should not be the primary factor or a trump for either side. That is, above-cost pricing (measured in terms of incremental revenue less than incremental cost) should not be sufficient by itself for the defendant to escape liability. Nor should below-cost pricing (again, measured in terms of incremental revenue less than incremental cost) should not be a sufficient by itself for a finding of liability.

Such “Creeping Brookism” does not led to either rigorous or accurate antitrust analysis. It is a path to higher error rates, not a lower ones.

Nor should courts rely on simple-minded foreclosure rates. Gilbarco shows how a mechanical approach to measuring foreclosure leads to confusion. Microsoft makes it clear that a “total foreclosure” test also is deficient. Instead, a better approach is to require the plaintiff to prove under the Rule of Reason standard that the conduct harms the rival by reducing its ability to compete and also that it harms consumers.

I should add one other point for completeness. Some (but not Commissioner Wright or Professor Crane) might suggest that the price-cost test has administrability benefits relative to a full rule of reason analysis under the RRC paradigm. While courts are capable are evaluating prices and costs, that comparison may be more difficult than measuring the increase in the rivals’ distribution costs engendered by the conduct. Moreover, the price-cost comparison becomes an order of magnitude more complex in loyalty discount cases, relative to plain vanilla predatory pricing cases. This is because it also is necessary to determine a reasonable measure of the contestable volume to use to compare incremental revenue and incremental cost. For first-dollar discounts, there will always be some small region where incremental revenue is below incremental cost. Even aside from this situation, the two sides often will disagree about the magnitude of the volume that was at issue.

In summary, I think that Professor Wright’s speech forms the basis of moving the discussion forward into analysis of the actual evidence of benefits and harms, rather than continuing to fight the battles over whether the legal analysis used in the 1950s and 1960s failed to satisfy modern standards and thereby needed to be reined in with unreliable safe harbors.