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Public–Private Collusion

Author

Listed:
  • Filipa Mota

    (Católica Porto Business School and Universidade de Aveiro)

  • João Correia-da-Silva

    (University of Porto)

  • Joana Pinho

    (CEGE and Católica Porto Business School)

Abstract

We study collusion between a public firm and a private firm facing linear demand and quadratic costs. We characterize the collusive outcome that results from Nash bargaining and compare it to the non-cooperative outcome. If the public firm’s taste for consumer surplus is mild, both firms reduce output (as in a private duopoly). If it is intermediate, while the public firm reduces output, the private firm expands output to such an extent that total output increases. If it is strong, the private firm’s output expansion does not compensate for the public firm’s output contraction, and thus total output decreases. We also characterize collusion sustainability, and assess the impact of relative bargaining power, degree of cost convexity, public firm’s taste for total surplus, and cost asymmetry. We conclude that, by reducing the productive inefficiency that is caused by the public firm being more expansionary, collusion may lead to higher profits and consumer surplus.

Suggested Citation

  • Filipa Mota & João Correia-da-Silva & Joana Pinho, 2023. "Public–Private Collusion," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 62(4), pages 393-417, June.
    • Handle: RePEc:kap:revind:v:62:y:2023:i:4:d:10.1007_s11151-023-09903-3
    DOI: 10.1007/s11151-023-09903-3
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    References listed on IDEAS

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    More about this item

    Keywords

    Collusion; Public firms; Mixed oligopoly; Nash bargaining;
    All these keywords.

    JEL classification:

    • L44 - Industrial Organization - - Antitrust Issues and Policies - - - Antitrust Policy and Public Enterprise, Nonprofit Institutions, and Professional Organizations
    • L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices
    • L21 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Business Objectives of the Firm
    • H44 - Public Economics - - Publicly Provided Goods - - - Publicly Provided Goods: Mixed Markets
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection

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