Antitrust should center on dynamic market forces that drive major technological change, rather than on static “big is bad” market analysis, based on the work of the 2025 economics Nobel Prize winners. Antitrust enforcers in the United States and around the world could benefit by incorporating these insights into their policy development.
Focus on Dynamic Competition
The work of the 2025 Nobel laureates in economics—Joel Mokyr, Philippe Aghion, and Peter Howitt—carries significant implications for modern antitrust and competition policy. The trio’s research, which explains how innovation drives economic growth through a process of “creative destruction,” challenges the traditional, static view of competition.
This older model focused on market structure and firm concentration, assuming that more competitors automatically led to better outcomes. In contrast, the laureates’ dynamic framework emphasizes a constant process of innovation and displacement, in which new and superior products and firms replace older, less efficient ones.
This perspective suggests that competition is not merely about price wars, but a dynamic struggle to innovate. For competition policy, this shift means moving beyond a singular focus on market concentration to a more holistic approach that balances the benefits of creative destruction with the risks of anticompetitive behavior.
Creative Destruction
The central concept in Aghion and Howitt’s work is the formalization of Joseph Schumpeter’s theory of “creative destruction.” (It also gibes with Nobel laureate Friedrich Hayek’s view that competition is a dynamic discovery process.) Their mathematical models demonstrate how economic growth is sustained through an endless cycle in which innovative firms displace established incumbents. This idea has crucial implications for how antitrust authorities should view dominant market players.
Antitrust enforcers historically have deemed a firm with a large market share a potential threat to competition that merits close scrutiny. In an innovation-driven economy, however, any firm’s dominance may be temporary, as the next disruptive innovation could quickly erode its position. Google, for example, displaced Yahoo as the market leader in online search due to its superior search algorithm, which focused on user experience and relevant results, rather than simply prioritizing paid placements.
Antitrust policy must therefore distinguish between dominance achieved through legitimate innovation and dominance maintained through anticompetitive practices designed to stifle new rivals. The latter would be detrimental to the very engine of growth the laureates describe.
This dynamic view challenges overreliance on simple metrics like the Herfindahl-Hirschman index (HHI) for merger review and antitrust enforcement. The HHI measures market concentration, with higher HHI scores indicating higher market concentration (fewer firms with higher individual market shares).
But Aghion and Howitt’s work suggests that a highly concentrated market could still be intensely competitive if firms are constantly jockeying for a dominant position through R&D and innovation. An overzealous application of concentration metrics could block a merger that might enable innovation and create efficiencies, fearing that it would create an overly dominant player. It could also generate mistaken efforts to break up or micromanage a firm whose current monopoly market share is based solely on its innovation and superior efficiency.
Competition policy therefore should incorporate forward-looking assessments of the incentives to innovate, not just backward-looking evaluations of market structure. This means considering how a merger or business practice affects a firm’s incentive and ability to innovate, as well as the potential for new entrants to disrupt the market.
Historical Insights
Joel Mokyr’s work, which focuses on the historical and institutional prerequisites for sustained technological progress, adds another critical layer to the discussion. His research explains that technological change requires more than just flashes of inventive genius; it depends on a “culture of growth” that values knowledge, experimentation, and open communication.
This historical perspective has direct implications for antitrust policy by stressing the need to preserve and nurture the foundational conditions for innovation. For example, policies concerning intellectual-property (IP) rights must strike a careful balance. Overly expansive IP protections (say, a 75-year patent life) could grant monopolies and stifle further innovation, but weak protections (say, a sharp limitation on what sorts of inventions are patentable) could reduce the incentive for firms to invest in R&D.
Similarly, Mokyr’s work underscores the danger of established companies or interest groups using their power to block disruptive innovations that threaten their position. Antitrust authorities, therefore, have a vital role in preventing “regulatory capture” (a regulatory agency’s subservience to the interests of regulated firms) and other rent-seeking behaviors that could undermine the process of creative destruction.
The laureates’ research suggests that competition policy and industrial policy are not mutually exclusive but can be complementary. While Aghion and Howitt focus on the benefits of market competition in driving innovation, Mokyr’s work highlights the importance of broader institutional and cultural factors.
This implies that governments can actively promote a climate of innovation through various policies. These may include, for example, funding basic research, ensuring a robust and well-funded system of higher education, and fostering a society that is open to change and new ideas. This is in addition to traditional antitrust enforcement against anticompetitive behavior. Rather than simply policing market behavior, policy could be used to encourage and disperse innovative activity across firms, preventing the concentration of power in a few “national champions” and spurring more widespread innovation.
Laureates’ Views in a Nutshell
The work of Mokyr, Aghion, and Howitt provides a powerful lens through which to view competition. By emphasizing innovation and creative destruction as the primary drivers of long-term economic growth, they shift the focus of antitrust and competition policy away from a static analysis of market shares.
They advocate instead for a dynamic framework that considers how competition fosters or stifles innovation. This perspective demands a more sophisticated approach from enforcers, one that looks beyond simple concentration metrics to evaluate the health of an ecosystem of innovation. By protecting the processes of creative destruction and preventing incumbents from blocking progress, competition policy can become a more powerful tool for promoting long-term prosperity.
US Antitrust-Enforcement History in a Nutshell
Prior to the 1980s, the U.S. federal antitrust enforcers—the U.S. Justice Department (DOJ) and the Federal Trade Commission (FTC)—employed a strict structural approach that presumed almost all mergers among competitors were anticompetitive. The enforcers also condemned many restrictive business arrangements as anticompetitive, without regard to their actual effect on competition and innovation.
In light of new economic research, from the 1980s to 2020, the DOJ and FTC abandoned a strict structural approach and centered enforcement on the likely effects on consumer welfare of the conduct under scrutiny. Hard economic facts became crucial. The agencies, however, did not routinely incorporate new dynamic features into their evaluations. This may have reflected current limitations in economic analysis that made accurate dynamics-based economic predictions difficult to obtain.
From 2021-2025, the Biden Administration rejected the four-decades-old enforcement philosophy. It downplayed economic analysis and consumer welfare and reinstated the pre-1980s approach that emphasized market shares and favored protection of small competitors. The DOJ and FTC promulgated new 2023 merger guidelines that largely ignored efficiencies and highlighted increased market share as a key enforcement criterion. The second Trump administration has not rescinded those guidelines.
Advice for Policymakers
The administration may want to readjust antitrust policy in light of the Nobel laureates’ focus on dynamic competition. This could involve merger-guidelines revisions that:
- Use high market concentration merely as a screening device for further review of a merger but reject any presumption of likely illegality based on market shares alone.
- Place far greater emphasis on the importance of efficiencies—especially dynamic efficiencies—in merger evaluation. Higher expected economic growth may raise consumer welfare far more than any negative effects.
- Eliminate the current guidelines’ overemphasis on potential theories of harm and clarify that only hard facts that indicate a substantial lessening of competition will trigger an enforcement action.
It might also include new guidance on monopolization and joint conduct that:
- Reinstates previous analysis on single-firm conduct that weighed efficiencies and non-anticompetitive explanations for restrictive conduct.
- Assesses the potential for innovation and economic growth as key factors that may justify the restrictive conduct under scrutiny.
