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Market Performance With Multiproduct Firms

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  • SIMON P. ANDERSON
  • ANDRÉ DE PALMA

Abstract

We revisit the fundamental issue of market provision of variety associated with Chamberlin, Spence, and Dixit‐Stiglitz when firms sell multiple products. Both products and firms are (horizontally) differentiated. We propose a general nested demand framework where consumers first decide upon a firm then which variant to buy and how much (the nested CES is a special case). We use it to determine the market's biases when firms compete in product ranges and prices. The market system attracts too many firms with too few products per firm: firms restrain product ranges to relax price competition, but this exacerbates over‐entry.

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  • Simon P. Anderson & André De Palma, 2006. "Market Performance With Multiproduct Firms," Journal of Industrial Economics, Wiley Blackwell, vol. 54(1), pages 95-124, March.
    • Handle: RePEc:bla:jindec:v:54:y:2006:i:1:p:95-124
    DOI: 10.1111/j.1467-6427.2006.00277.x
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    8. Minniti Antonio, 2006. "Multi-product Firms, R&D, and Growth," The B.E. Journal of Macroeconomics, De Gruyter, vol. 6(3), pages 1-46, December.
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    More about this item

    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
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection

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