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Markets in motionPublished 13 November 2026

Special Issue: New Measures of Competition in the Digital Economy

Thibault Schrepel Associate Professor of Law, Vrije Universiteit Amsterdam and Faculty Affiliate, Stanford CodeX
Dirk Auer Director of Competition Policy, International Center for Law & Economics

Competition law relies on measurement. A market share above a threshold can make a firm dominant, and a concentration index can decide whether a merger receives a second look. This special issue, prepared with the International Center for Law & Economics, asks what competition authorities and courts should measure in…

Explore by theme

Eight constellations drawn from the archive. Each star is a publication.
All sixteen themes
The most read articles of the last 60 days, and how they moved this week
  1. Number 1, same place as last week: A Farewell to Net Neutrality: Implications for Internet Access and E-Commerce Daniel F. Spulber
  2. 2Number 2, up 2 places since last week: Fueling Concentration: AI Agents and Network Effects Raz Agranat and Michal S. Gal
  3. 1Number 3, down 1 place since last week: Keeper Acquisitions: What Big Tech Keeps When It Buys Selçukhan Ünekbas
  4. 2Number 4, up 2 places since last week: Permission to Learn: An Economic Approach to AI Copyright Joshua Gans
  5. 2Number 5, down 2 places since last week: Principal-Agent Dynamics and Digital (Platform) Economics in the Age of Agentic AI Volker Stocker and William Lehr

Summer 2026

The latest complete issue
The archive, 563 publications since 2012
  1. Keeper Acquisitions: What Big Tech Keeps When It Buys Selçukhan Ünekbas

    The “killer acquisition” hypothesis dominates debate on technology mergers, asking whether large firms buy startups to eliminate them. But the more revealing question is what acquirers keep.

  2. Dominance in Motion: A practical R&D-intensity test for dynamic markets Jorge Padilla

    In innovation-driven markets, a market share records who is ahead; it does not reveal how hard that firm must work to remain ahead. A dominance assessment should therefore examine the incumbent’s innovation effort and the…

  3. Introducing The Minerva Papers Jorge Padilla

    Why this title? Among the gods of antiquity, Minerva has suffered a peculiar fate. Mars still lends his name to war, Venus to beauty and desire, Mercury to speed and commerce.

  4. The Law and Economics of Superior Bargaining Power Giuseppe Colangelo

    The abuse of economic dependence has attracted renewed attention, largely as a result of the growing policy focus on fairness in digital markets.

  5. Somewhere Over the Rainbow: Assessing the Draft EU Merger Guidelines Jorge Padilla

    This paper assesses the European Commission’s draft Merger Guidelines against the treatment of efficiencies, the failing firm defence, and the counterfactual in the 2004 Horizontal Merger Guidelines and the 2008 Non-Horizontal…

  6. A Farewell to Net Neutrality: Implications for Internet Access and E-Commerce Daniel F. Spulber

    I consider legal decisions resulting in the end of the Federal Communications Commission’s net neutrality regulation. There is evidence that net neutrality regulation has diminished incentives to invest in internet access and…

  7. Antitrust Antidote: April-June 2026 Jeremy Kauffman, Jeremy Sandford, Nathan Wilson and Koren W. Wong-Ervin

    There were a number of significant decisions from April through June 2026, including: (1) the Eastern District of California’s preliminary injunction in In re Nexstar-Tegna Merger Litigation, requiring hold-separate relief…

Series and special issues

Each square is an entry, each tile is sized by its number of articles, the latest special issue first.

Reading suggestions

The papers and articles Thibault Schrepel enjoyed reading each month.

All months
  • October 2026
    • Rule of reason
    • Network effects
    • AI copyright
    • Interpretability
    • Prediction markets
  • September 2026
    • Article 102 guidelines
    • Killer acquisitions
    • Monopoly causation
    • Recursive self-improvement
    • The university after AI
  • August 2026
    • The EU digital rulebook
    • Superior bargaining power
    • Breakups
    • Agentic AI governance
    • Why Europe cannot scale

Editorial board

Creator and Editor-in-Chief
Thibault Schrepel, Vrije Universiteit Amsterdam and Stanford

Editorial Associate
Anouk van der Veer, Tilburg University

Content Editors
Faith Obafemi, University of Aveiro
Abdullah Yerebakan, Utrecht University

Anupam Chander, William E. Kovacic, Catalina Goanta, Daniel Crane, David Bosco, A. Douglas Melamed, Frédéric Jenny, Giovanni Dosi, Godefroy de Boiscuillé, Herbert Hovenkamp, Howard Shelanski, Jason Potts, Jonathan Barnett, Katherine J. Strandburg, Koren W. Wong-Ervin, Mariateresa Maggiolino, Michal Shur-Ofry, Nicolas Petit, Nuno Cunha Rodrigues, Pinar Akman, Randal C. Picker, Richard Langlois, Sofia Ranchordás, Thomas Nachbar, Volker Stocker.

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