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Market Share Regulation?

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Author Info

  • Hideo Konishi

    ()
    (Boston College)

  • Çaglar Yurtseven

    (Bahcesehir University)

Abstract

In the 1950s and 60s, Japanese and US antitrust authorities occassionally used the degree of concentration to regulate industries. Does regulating firms based on their market shares make theoretical sense? We set up a simple duopoly model with stochastic R&D activities to evaluate market share regulation policy. On the one hand, market share regulation discourages the larger company's R&D investment and causes economic inefficiency. On the other hand, it facilitates the smaller company's survival, and prevents the larger company from monopolizing the market. We show that consumers tend to benefit from market share regulation. However, the social welfare including firms' profits would be hurt if both firms are equally good at R&D innovation. Nonetheless, if the smaller firm can make innovations more efficiently, then protecting smaller firms through market share regulation can improve the social welfare. We relate our analysis to a case study of Asahi Brewery's introducing Asahi Super Dry to become the top market share company in the industry.

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Bibliographic Info

Paper provided by Boston College Department of Economics in its series Boston College Working Papers in Economics with number 847.

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Date of creation: 29 Oct 2013
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Publication status: published, Japan and the World Economy, 29, 36-45 (2014)
Handle: RePEc:boc:bocoec:847

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Related research

Keywords: R&D investment; market share; regulations; welfare analysis;

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References

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  1. Junichiro Ishida & Toshihiro Matsumura & Noriaki Matsushima, 2010. "Market Competition, R&D and Firm Profits in Asymmetric Oligopoly," ISER Discussion Paper 0777, Institute of Social and Economic Research, Osaka University.
  2. Dixit, Avinash, 1979. "The Role of Investment in Entry-Deterrence," The Warwick Economics Research Paper Series (TWERPS) 140, University of Warwick, Department of Economics.
  3. repec:cup:cbooks:9780521816632 is not listed on IDEAS
  4. Motta,Massimo, 2004. "Competition Policy," Cambridge Books, Cambridge University Press, number 9780521016919, April.
  5. Jean Tirole, 1988. "The Theory of Industrial Organization," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262200716, December.
  6. Demsetz, Harold, 1973. "Industry Structure, Market Rivalry, and Public Policy," Journal of Law and Economics, University of Chicago Press, vol. 16(1), pages 1-9, April.
  7. Creane, Anthony & Konishi, Hideo, 2009. "The unilateral incentives for technology transfers: Predation (and deterrence) by proxy," International Journal of Industrial Organization, Elsevier, vol. 27(3), pages 379-389, May.
  8. Spence, Michael, 1984. "Cost Reduction, Competition, and Industry Performance," Econometrica, Econometric Society, vol. 52(1), pages 101-21, January.
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