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Competition among the big and the small

Author

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  • Ken-Ichi Shimomura
  • Jacques-François Thisse

Abstract

Armchair evidence shows that many industries are made of a few big commercial or manufacturing firms, which are able to affect the market outcome, and of a myriad of small family-run businesses with very few employees, each of which has a negligible impact on the market. Examples can be found in apparel, catering, publishers and bookstores, retailing, finance and insurances, and IT industries. We provide a new general equilibrium framework that encapsulates both market structures. Due to the higher toughness of the market, the entry of big firms leads them to sell more through a market expansion effect, which is generated by the exit of small firms. Furthermore, the level of social welfare increases with the number of oligopolistic firms because the procompetitive effect associated with the entry of a big firm dominates the resulting decrease in product variety.
(This abstract was borrowed from another version of this item.)
(This abstract was borrowed from another version of this item.)

Suggested Citation

  • Ken-Ichi Shimomura & Jacques-François Thisse, 2012. "Competition among the big and the small," RAND Journal of Economics, RAND Corporation, vol. 43(2), pages 329-347, June.
    • Handle: RePEc:bla:randje:v:43:y:2012:i:2:p:329-347
    DOI: j.1756-2171.2012.00168.x
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    JEL classification:

    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L40 - Industrial Organization - - Antitrust Issues and Policies - - - General

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