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Horizontal mergers in the presence of vertical relationships

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  • Ghosh, Arghya
  • Morita, Hodaka
  • Wang, Chengsi

Abstract

We study welfare effects of horizontal mergers under a successive oligopoly model and find that downstream mergers can increase welfare if they reduce input prices. The lower input price shifts some input production from cost-inefficient upstream firms to cost-efficient ones. Also, the lower input price makes upstream entry less attractive, reduces the number of upstream entrants, and decreases their average costs in the presence of fixed entry costs. We identity necessary and sufficient conditions for a reduction in input prices and welfare-improving horizontal mergers under a general demand function. Qualitative nature of our findings remains unchanged for upstream mergers.

Suggested Citation

  • Ghosh, Arghya & Morita, Hodaka & Wang, Chengsi, 2014. "Horizontal mergers in the presence of vertical relationships," MPRA Paper 60275, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:60275
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    References listed on IDEAS

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    Cited by:

    1. Germain Gaudin, 2018. "Vertical Bargaining and Retail Competition: What Drives Countervailing Power?," Economic Journal, Royal Economic Society, vol. 128(614), pages 2380-2413, September.
    2. Fanti, Luciano, 2016. "Social welfare and cross-ownership in a vertical industry: When the mode of competition matters for antitrust policy," Japan and the World Economy, Elsevier, vol. 37, pages 8-16.

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    More about this item

    Keywords

    merger; successive oligopoly; welfare; reallocation; rationalization.;
    All these keywords.

    JEL classification:

    • L1 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance
    • L4 - Industrial Organization - - Antitrust Issues and Policies
    • L5 - Industrial Organization - - Regulation and Industrial Policy

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