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La concurrence entre distributeurs favorise-t-elle la variété des produits ?

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  • Patrick Waelbroeck
  • Marie-Laure Allain

Abstract

[fre] Nous examinons l’impact des structures de marché sur la variété des produits, lorsque le coût de lancement d’un nouveau produit est fixe et réparti entre les secteurs de production et de distribution. Une chaîne intégrée verticalement offre alors une plus grande variété de produits qu’une chaîne de monopoles. Si le coût de lancement du nouveau produit est supporté essentiellement par l’amont, une concurrence imparfaite dans le secteur aval ne restaure que partiellement les incitations à innover de la structure verticale. En revanche, si ce coût est supporté principalement par le secteur aval, la concurrence en aval peut amener plus d’innovation que dans une structure verticalement intégrée. Dans les deux cas, la concentration du secteur aval réduit la variété des produits. [eng] We examine the impact of horizontal and vertical market structure on product variety. We consider a market for horizontally differentiated products where the cost of a new-product launch is fixed and spread between the manufacturing and retail industries. We show that a vertically integrated firm offers a wider variety of products than a chain of monopolies. If the launch cost is shared equally across the vertical entity or supported mainly by manufacturers, inter-vendor competition partially restores the incentives to innovate. By contrast , when most of the cost is borne by the retail sector, competition between merchants may foster even more innovation than vertical integration. In both cases, retail concentration reduces product variety.

Suggested Citation

  • Patrick Waelbroeck & Marie-Laure Allain, 2007. "La concurrence entre distributeurs favorise-t-elle la variété des produits ?," Économie et Prévision, Programme National Persée, vol. 178(2), pages 1-14.
    • Handle: RePEc:prs:ecoprv:ecop_0249-4744_2007_num_178_2_7637
    DOI: 10.3406/ecop.2007.7637
    Note: DOI:10.3406/ecop.2007.7637
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