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Vertical Differentiation and Collusion: Cannibalization or Proliferation?

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  • Gabszewicz, Jean J.
  • Marini, Marco A.
  • Tarola, Ornella

Abstract

In this paper, we tackle the dilemma of pruning versus proliferation in a vertically differentiated oligopoly under the assumption that some firms collude and control both the range of variants for sale and their corresponding prices, likewise a multiproduct firm. We analyse whether pruning emerges and, if so, a fighting brand is marketed. We find that it is always more profitable for colluding firms to adopt a pricing strategy such that some variants are withdrawn from the market. Under pruning, these firms commercialize a fighting brand only when facing competitors in a low-end market. The same findings do not hold when firms are horizontally differentiated along a circle.

Suggested Citation

  • Gabszewicz, Jean J. & Marini, Marco A. & Tarola, Ornella, 2016. "Vertical Differentiation and Collusion: Cannibalization or Proliferation?," ET: Economic Theory 232221, Fondazione Eni Enrico Mattei (FEEM).
  • Handle: RePEc:ags:feemet:232221
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    References listed on IDEAS

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    Cited by:

    1. Marini, Marco A., 2016. "Collusive Agreements in Vertically Differentiated Markets," MPRA Paper 75369, University Library of Munich, Germany.
    2. Gabszewicz, Jean J. & Marini, Marco A. & Tarola, Ornella, 2016. "Core existence in vertically differentiated markets," Economics Letters, Elsevier, vol. 149(C), pages 28-32.
    3. Mantovani, Andrea & Tarola, Ornella & Vergari, Cecilia, 2016. "Hedonic and environmental quality: A hybrid model of product differentiation," Resource and Energy Economics, Elsevier, vol. 45(C), pages 99-123.

    More about this item

    Keywords

    Vertically Differentiated Markets; Cannibalization; Market Pruning; Price Collusion; Public Economics; D42; D43; L1; L12; L13; L41;

    JEL classification:

    • D42 - Microeconomics - - Market Structure, Pricing, and Design - - - Monopoly
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • L1 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance
    • L12 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Monopoly; Monopolization Strategies
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices

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