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Vertical Differentiation: Multiproduct Strategy to Face Entry?

Author

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  • Jean-Marc Bonnisseau

    (CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique)

  • Rim Lahmandi-Ayed

    (LEGI - Laboratoire d'Économie et de Gestion Industrielle [Tunis] - Ecole Polytechnique de Tunisie - UCAR - Université de Carthage (Tunisie))

Abstract

In this paper, we consider an incumbent firm facing potential entry in a vertical differentiation model a la Mussa and Rosen where consumers differ only by their intensity of preference for quality. We ask whether the incumbent firm has the incentive to adopt a multi-product strategy in order to face entry, in a natural duopoly case. It turns out that this strategy is never profitable and that an incumbent always prefers to produce one quality. It appears that either a cost effect or an income dispersion are necessary to urge producers to offer several products

Suggested Citation

  • Jean-Marc Bonnisseau & Rim Lahmandi-Ayed, 2006. "Vertical Differentiation: Multiproduct Strategy to Face Entry?," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) hal-00310490, HAL.
    • Handle: RePEc:hal:cesptp:hal-00310490
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    Cited by:

    1. Gabszewicz, Jean J. & Marini, Marco A. & Tarola, Ornella, 2017. "Vertical differentiation and collusion: Pruning or proliferation?," Research in Economics, Elsevier, vol. 71(1), pages 129-139.
    2. Lahmandi-Ayed, Rim, 2010. "Spatial differentiation, divisible consumption and the pro-competitive effect of income," Journal of Mathematical Economics, Elsevier, vol. 46(1), pages 71-85, January.
    3. Gabszewicz Jean J. & Marini Marco A. & Tarola Ornella, 2019. "Endogenous Mergers in Markets with Vertically Differentiated Products," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 19(1), pages 1-22, January.
    4. Tian Xia & Richard Sexton, 2010. "Brand or Variety Choices and Periodic Sales as Substitute Instruments for Monopoly Price Discrimination," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 36(4), pages 333-349, June.
    5. Rim Lassoued & Konstantinos Giannakas, 2010. "Economic Effects of the Consumer‐oriented Genetically Modified Products in Markets with a Labelling Regime," Journal of Agricultural Economics, Wiley Blackwell, vol. 61(3), pages 499-526, September.
    6. Cheng Yi-Ling & Peng Shin-Kun & Tabuchi Takatoshi, 2011. "Multiproduct Duopoly with Vertical Differentiation," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 11(1), pages 1-29, August.
    7. Yi-Ling Cheng & Shin-Kun Peng, 2014. "Price competition and quality differentiation with multiproduct firms," Journal of Economics, Springer, vol. 112(3), pages 207-223, July.
    8. Müller, Stephan & Götz, Georg, 2014. "Quality competition and entry deterrence: When to launch an extra brand," University of Göttingen Working Papers in Economics 223, University of Goettingen, Department of Economics.
    9. Jean Gabszewicz & Ornella Tarola, 2012. "Product innovation and firms’ ownership," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 21(4), pages 323-343, April.
    10. Jean J. Gabszewicz & Marco A. Marini & Ornella Tarola, 2016. "Vertical Differentiation and Collusion: Cannibalization or Proliferation?," Working Papers 2016.15, Fondazione Eni Enrico Mattei.
    11. GABSZEWICZ, Jean & TAROLA, Ornella, 2010. "Product innovation and market acquisition of firms," LIDAM Discussion Papers CORE 2010078, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    12. Peter-J. Jost, 2023. "Price commitment and the strategic launch of a fighter brand," Quantitative Marketing and Economics (QME), Springer, vol. 21(3), pages 381-435, September.
    13. Jean J. Gabszewicz & Marco A. Marini & Ornella Tarola, 2016. "Vertical Differentiation and Collusion: Cannibalization or Proliferation?," Working Papers 2016.15, Fondazione Eni Enrico Mattei.

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