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Collusion, Firm Numbers and Asymmetries Revisited

Author

Listed:
  • Luke Garrod

    (School of Business and Economics, Loughborough University)

  • Matthew Olczak

    (Aston Business School, Aston University, Birmingham)

Abstract
Despite the fact that competition law prohibits explicit cartels but not tacit collusion, theories of collusion often do not distinguish between the two. In this paper, we address this issue and ask: under which types of market structures are cartels likely to arise when firms can alternatively collude tacitly? To answer this question, we analyse an infinitely repeated game where firms with (possibly asymmetric) capacity constraints can make secret price cuts. Tacit collusion can involve price wars on the equilibrium path. Explicit collusion involves firms secretly sharing their private information in an illegal cartel to avoid such price wars. However, this runs the risk of sanctions. We find that, in contrast to the conventional wisdom but consistent with the available empirical evidence, cartels are least likely to arise in markets with a few symmetric firms, because tacit collusion is relatively more appealing in such markets. We discuss the implications for anti-cartel enforcement policy.

Suggested Citation

  • Luke Garrod & Matthew Olczak, 2016. "Collusion, Firm Numbers and Asymmetries Revisited," Working Paper series, University of East Anglia, Centre for Competition Policy (CCP) 2016-11, Centre for Competition Policy, University of East Anglia, Norwich, UK..
    • Handle: RePEc:uea:ueaccp:2016_11
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    References listed on IDEAS

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    Cited by:

    1. Garrod, Luke & Olczak, Matthew, 2018. "Explicit vs tacit collusion: The effects of firm numbers and asymmetries," International Journal of Industrial Organization, Elsevier, vol. 56(C), pages 1-25.

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    More about this item

    Keywords

    cartel; tacit collusion; imperfect monitoring; capacity constraints;
    All these keywords.

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • K21 - Law and Economics - - Regulation and Business Law - - - Antitrust Law
    • L44 - Industrial Organization - - Antitrust Issues and Policies - - - Antitrust Policy and Public Enterprise, Nonprofit Institutions, and Professional Organizations

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