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Local network externalities and market segmentation

Author

Listed:
  • A. Banerji

    (Delhi School of Economics)

  • Bhaskar Dutta

    (University of Warwick, UK)

Abstract

This paper models interaction between groups of agents by means of a graph where each node represents a group of agents and an arc represents bilateral interaction. It departs from the standard Katz-Shapiro framework by assuming that network benefits are restricted only amongst groups of linked agents. It shows that even if rival firms engage in Bertrand competition, this form of network externalities permits strong market segmentation in which firms divide up the market and earn positive profits. The analysis also shows that some graphs or network structures do not permit such segmentation, while for others, there are easy to interpret conditions under which market segmentation obtains in equilibrium.

Suggested Citation

  • A. Banerji & Bhaskar Dutta, 2008. "Local network externalities and market segmentation," Discussion Papers 08-13, Indian Statistical Institute, Delhi.
  • Handle: RePEc:alo:isipdp:08-13
    as

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    File URL: http://www.isid.ac.in/~pu/dispapers/dp08-13.pdf
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    References listed on IDEAS

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    More about this item

    Keywords

    network structure; network externalities; price competition; market segmentation;
    All these keywords.

    JEL classification:

    • D7 - Microeconomics - - Analysis of Collective Decision-Making

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