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Multiproduct Quality Competition: Fighting Brands and Product Line Pruning

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  • David P. Myatt
  • Justin P. Johnson

Abstract

Firms selling multiple quality-differentiated products frequently alter their product lines when a competitor enters the market. We present a model of multiproduct monopoly and duopoly using a general `upgrades` approach that yields a powerful analytical framework. We provide a simple theoretical explanation for the common strategies of using `fighting brands` and of product line `pruning`. We also present a general condition that guarantees that a monopolist will forsake market segmentation opportunities and sell but a single product. A number of previously studied issues can be addressed by our model, including inter-temporal price discrimiation and `damaged goods`.

Suggested Citation

  • David P. Myatt & Justin P. Johnson, 2002. "Multiproduct Quality Competition: Fighting Brands and Product Line Pruning," Economics Series Working Papers 105, University of Oxford, Department of Economics.
  • Handle: RePEc:oxf:wpaper:105
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    References listed on IDEAS

    as
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    More about this item

    Keywords

    multiproduct quality competition; fighting brands; product line pruning; focus on quality; price discrimination;

    JEL classification:

    • D42 - Microeconomics - - Market Structure, Pricing, and Design - - - Monopoly
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
    • L15 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Information and Product Quality
    • L63 - Industrial Organization - - Industry Studies: Manufacturing - - - Microelectronics; Computers; Communications Equipment

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