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Does Common Ownership Distort Entry Incentives In Successive Oligopolies?

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  • Basak, Debasmita

Abstract

It is commonly believed that common ownership deters entry by internalizing market competition which warrants pro-competitive entry regulations. Using a successive oligopoly model with common ownership, we challenge this conventional wisdom. We show that if the downstream sector alone operates under common ownership, entry is always socially excessive, i.e., more firms enter the market than is socially optimal. In contrast, when the upstream sector alone operates under common ownership, entry is socially excessive (insufficient) if the degree of common ownership in the upstream market is reasonably low (high). Finally, when both sectors are characterized by common ownership, entry is socially excessive if the degree of ownership in the downstream market is stronger than that in the upstream market. Therefore, our findings provide a rationale for anti-competitive, rather than pro-competitive entry regulations.

Suggested Citation

  • Basak, Debasmita, 2025. "Does Common Ownership Distort Entry Incentives In Successive Oligopolies?," EconStor Preprints 319538, ZBW - Leibniz Information Centre for Economics.
    • Handle: RePEc:zbw:esprep:319538
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    References listed on IDEAS

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    1. José Azar & Martin C. Schmalz & Isabel Tecu, 2018. "Anticompetitive Effects of Common Ownership," Journal of Finance, American Finance Association, vol. 73(4), pages 1513-1565, August.
    2. Newham, M. & Seldeslachts, J. & Banal-Estanol, A., 2018. "Common Ownership and Market Entry: Evidence from the Pharmaceutical Industry," Working Papers 18/03, Department of Economics, City St George's, University of London.
    3. Reynolds, Robert J. & Snapp, Bruce R., 1986. "The competitive effects of partial equity interests and joint ventures," International Journal of Industrial Organization, Elsevier, vol. 4(2), pages 141-153, June.
    4. Arghya Ghosh & Hodaka Morita, 2007. "Free entry and social efficiency under vertical oligopoly," RAND Journal of Economics, RAND Corporation, vol. 38(2), pages 541-554, June.
    5. Kristopher Gerardi & Michelle Lowry & Carola Schenone, 2023. "A Critical Review of the Common Ownership Literature," FRB Atlanta Working Paper 2023-17, Federal Reserve Bank of Atlanta.
    Full references (including those not matched with items on IDEAS)

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    Keywords

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    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L22 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Firm Organization and Market Structure

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