Publications: Giorgio Castiglia
December 8, 2025
Still Insignificant: An Update on Concentration in the US Economy
Despite evidence to the contrary, a persistent narrative during the past two administrations has been that corporate power is getting increasingly concentrated, ergo antitrust breakups are warranted. But the latest Census Bureau data once again puts the lie to that argument.
November 20, 2025
The G20 “Stiglitz Report” Offers Critically Flawed Antitrust Recommendations
A report on inequality commissioned for this year’s G20 summit offers ill-advised antitrust recommendations for reducing income and wealth inequality.
November 12, 2025
iRobot's Avoidable Predicament: An Antitrust Enforcement Blunder
The failure of the Amazon/iRobot transaction, which was opposed by EU and U.S. antitrust authorities, has had catastrophic consequences for the American robotics firm and played into the hands of Chinese robot manufacturing rivals.
October 27, 2025
No, Microsoft’s Recent Changes Do Not Prove the Activision Deal Was Anticompetitive
Post-deal layoffs and price increases do not prove that an acquisition harmed competition, contrary to the recent rhetoric around the Microsoft/Activision deal.
October 16, 2025
Schumpeter’s Vindication: The Enduring Link Between Scale and Innovation
Economic evidence continues to show positive effects of firm size on innovation. Scale matters for innovation and economic growth, and antitrust policy should not be constrained by the “big is bad” notions of today’s antitrust populists.
October 14, 2025
Rethinking Antitrust: The Case for Dynamic Competition Policy
Antitrust policy relies too heavily on static models that focus on prices and market shares while treating innovation as external. A dynamic approach that views competition as a process of innovation is better suited to guiding policy in today’s technology-driven economy.
September 19, 2025
Five Persistent Myths About Big Tech
Populists on the right and left continue to peddle myths about the U.S. technology industry and its “Big Tech” firms. Five persistent myths in particular risk spurring regulations that would stifle innovation, slow growth, and weaken U.S. competitiveness.
July 11, 2025
Economic Experiments Weaken the FTC’s Case Against Meta
The recent trial in FTC v. Meta shows the important role that economic experiments can play in establishing a relevant market in antitrust cases. The evidence provided by Meta’s expert economists significantly hampers the FTC’s definition of the relevant market and thus its overall case.
May 2, 2025
Podcast: Tech Oligarchy in the USA? With Giorgio Castiglia
Giorgio Castiglia appeared on the Technocracy podcast, hosted by Heena Goswami of the Institute for Governance, Policies & Politics, to discuss whether the United States is moving toward a tech oligarchy and what that would mean for the future of democracy.
April 8, 2025
Big Tech Antitrust: Postelection Edition
While U.S. antitrust enforcement is likely to shift under a second Trump administration, ongoing cases against Big Tech are expected to continue. Rather than doubling down on neo-Brandeisian antitrust, the Trump administration should use evidence-based policymaking that recognizes how firms evolve in response to incentives and market dynamics.
