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Free Entry under Common Ownership

Author

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  • Sato, Susumu
  • Matsumura, Toshihiro

Abstract

This study investigates the equilibrium and welfare properties of free entry under common ownership. We formulate a model in which incumbents under common ownership choose whether to enter a new market. We find that an increase in common ownership reduces entries, which may or may not improve welfare. Welfare has an inverted-U shaped relationship with the degree of common ownership. However, if firms do not have common ownership before the entry, after entry common ownership harms welfare.

Suggested Citation

  • Sato, Susumu & Matsumura, Toshihiro, 2019. "Free Entry under Common Ownership," MPRA Paper 97525, University Library of Munich, Germany.
  • Handle: RePEc:pra:mprapa:97525
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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 University London.
    3. Gu, Yiquan & Wenzel, Tobias, 2009. "A note on the excess entry theorem in spatial models with elastic demand," International Journal of Industrial Organization, Elsevier, vol. 27(5), pages 567-571, September.
    4. Martin C. Schmalz, 2018. "Common-Ownership Concentration and Corporate Conduct," CESifo Working Paper Series 6908, CESifo.
    5. Steven C. Salop, 1979. "Monopolistic Competition with Outside Goods," Bell Journal of Economics, The RAND Corporation, vol. 10(1), pages 141-156, Spring.
    6. Ángel L. López & Xavier Vives, 2019. "Overlapping Ownership, R&D Spillovers, and Antitrust Policy," Journal of Political Economy, University of Chicago Press, vol. 127(5), pages 2394-2437.
    7. N. Gregory Mankiw & Michael D. Whinston, 1986. "Free Entry and Social Inefficiency," RAND Journal of Economics, The RAND Corporation, vol. 17(1), pages 48-58, Spring.
    8. Martin C. Schmalz, 2018. "Common-Ownership Concentration and Corporate Conduct," Annual Review of Financial Economics, Annual Reviews, vol. 10(1), pages 413-448, November.
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    Cited by:

    1. Haraguchi, Junichi & Matsumura, Toshihiro, 2020. "Common Ownership among Private Firms and Privatization Policies," MPRA Paper 102152, University Library of Munich, Germany.
    2. Zormpas, Dimitrios & Ruble, Richard, 2021. "The dynamics of preemptive and follower investments with overlapping ownership," Journal of Economic Dynamics and Control, Elsevier, vol. 129(C).
    3. Hiroaki Ino & Toshihiro Matsumura, 2021. "Free entry under an output-cap constraint," Discussion Paper Series 229, School of Economics, Kwansei Gakuin University.

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    More about this item

    Keywords

    Overlapping ownership; Free entry; Insufficient entry; Excessive entry; Circular markets;
    All these keywords.

    JEL classification:

    • 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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