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Endogenous mergers under multi-market competition

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  • Kao, Tina
  • Menezes, Flavio
Abstract
This paper examines a simple model of strategic interactions among firms that face at least some of the same rivals in two related markets (for goods 1 and 2). It shows that when firms compete in quantity, market prices increase as the degree of multi-market contact increases. However, the welfare consequences of multi-market contact are more complex and depend on how two fundamental forces play out. The first is the selection effect, which acts to increase welfare, as shutting down the relatively more inefficient firm is beneficial. The second opposing effect is the internalisation of the Cournot externality effect; reducing the production of good 2 allows firms to sustain a higher price for good 1. This works to increase prices and, therefore, decrease consumer surplus (but increase producer surplus). These two effects are influenced by the degree of asymmetry between markets 1 and 2 and the degree of substitutability between goods 1 and 2.

Suggested Citation

  • Kao, Tina & Menezes, Flavio, 2009. "Endogenous mergers under multi-market competition," Journal of Mathematical Economics, Elsevier, vol. 45(12), pages 817-829, December.
    • Handle: RePEc:eee:mateco:v:45:y:2009:i:12:p:817-829
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    References listed on IDEAS

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    Cited by:

    1. X. Wang & Jingang Zhao, 2010. "Why are firms sometimes unwilling to reduce costs?," Journal of Economics, Springer, vol. 101(2), pages 103-124, October.
    2. Takeda, Kohei & Hosoe, Toyoki & Watanabe, Takayuki & Matsubayashi, Nobuo, 2018. "Stability analysis of horizontal mergers in a market with asymmetric substitutability," Mathematical Social Sciences, Elsevier, vol. 96(C), pages 73-84.
    3. Hou, Rui & Yang, Jianmei & Yao, Canzhong & McKelvey, Bill, 2015. "How does competition structure affect industry merger waves? A network analysis perspective," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 429(C), pages 140-156.

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    More about this item

    Keywords

    Mergers Multi-market competition Cournot externality Cost efficiency;

    JEL classification:

    • 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
    • L44 - Industrial Organization - - Antitrust Issues and Policies - - - Antitrust Policy and Public Enterprise, Nonprofit Institutions, and Professional Organizations

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