Ariel Ezrachi

Ariel Ezrachi is the Slaughter and May Professor of Competition Law and Director of the University of Oxford Centre for Competition Law and Policy. He is co-editor-in-chief of the Journal of Antitrust Enforcement (OUP) and the author and co-author, of numerous books, including Competition Overdose - How Free Market Mythology Transformed Us from Citizen Kings to Market Servants (2020, HarperCollins) and Virtual Competition - The Promise and Perils of the Algorithm Driven Economy (2016, Harvard).

The Tech Barons’ Ideological Platter

Far from their self-promoted image as the world’s most innovative companies, the major tech platforms stifle plenty of innovation and invest in...

The Challenges to (Re)forming a Platform Economy for the People

Measured antitrust enforcement and a more comprehensive regulatory regime can ensure that we continue to benefit from digital markets. In attempting to...

eDistortions: How Data-opolies Are Dissipating the Internet's Potential

In this chapter from the forthcoming Stigler Center ebook Digital Platforms and Concentration, published in anticipation of the eponymous conference at Chicago Booth on...

Latest news

Why Have Uninsured Depositors Become De Facto Insured?

Due to a change in how the FDIC resolves failed banks, uninsured deposits have become de facto insured. Not only is this dangerous for risk in the banking system, it is not what Congress intends the FDIC to do, writes Michael Ohlrogge.

Merger Law Reaches Acquirer Incentives and Private Equity Strategies

Steven C. Salop argues that Section 7 of the Clayton Act prohibits mergers in which the acquiring firm’s unilateral incentives and business strategy are likely to lessen market competition.

Tim Wu Responds to Letter by Former Agency Chief Economists

Former special assistant to the president for technology and competition policy Tim Wu responds to the November 27 letter signed by former chief economists at the Federal Trade Commission and Justice Department Antitrust Division calling for a separation of the legal and economic analysis in the draft Merger Guidelines.

Can the Public Moderate Social Media?

ProMarket student editor Surya Gowda reviews the arguments made by Paul Gowder in his new book, The Networked Leviathan: For Democratic Platforms.

Uninhibited Campaign Donations Risks Creating Oligarchy

In new research, Valentino Larcinese and Alberto Parmigiani find that the 1986 Reagan tax cuts led to greater campaign spending from wealthy individuals, who benefited the most from this policy. The authors argue that a very permissive system of political finance, combined with the erosion of tax progressivity, created the conditions for the mutual reinforcement of economic and political disparities. The result was an inequality spiral hardly compatible with democratic ideals.

Did the Meme Stock Revolution Actually Change Anything?

Many financial commentators thought that the surge of retail investors participating in the stock market, the most notable of whom boosted “meme stocks” like GameStop, would democratize corporate governance and improve prosocial firm behavior, including the promotion of environmental, social, and governance (ESG) goals. In new research, Dhruv Aggarwal, Albert H. Choi, and Yoon-Ho Alex Lee find evidence that the exact opposite took place.

The Kroger-Albertsons Merger Will Not Help Grocery Competition

Kroger and Albertsons say they need to merge to compete with Walmart. Claire Kelloway argues that what they really want is Walmart’s monopsony power, and permitting mergers on these grounds will only harm suppliers, workers, and consumers.