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Long-Run Market Configurations in a Dynamic Quality-Ladder Model with Heterogeneity

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  • Mario Samano
  • Marc Santugini

Abstract

We study the long-run market configurations in a quality-ladder dynamic model. Specifically, we assume that the return to investment in quality differs across the firms. That is, for a given level of investment, one firm has a higher probability to raise the quality of the good it produces. We show that the model can generate five different types of long-run market configurations (market collapse, market collapse or monopoly, monopoly, duopoly and monopoly, and duopoly). A high degree of heterogeneity in the return to investment can mitigate the effect of highly reversible investments on the probability of market collapse, giving rise to non-negligible probabilities of observing a duopoly or even dominance of the firm with the lowest return to investment.

Suggested Citation

  • Mario Samano & Marc Santugini, 2015. "Long-Run Market Configurations in a Dynamic Quality-Ladder Model with Heterogeneity," Cahiers de recherche 1503, CIRPEE.
    • Handle: RePEc:lvl:lacicr:1503
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    References listed on IDEAS

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    More about this item

    Keywords

    Differentiated-good markets; Quality-ladder model; Heterogeneity; Dynamic investment;
    All these keywords.

    JEL classification:

    • C61 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Optimization Techniques; Programming Models; Dynamic Analysis
    • C73 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Stochastic and Dynamic Games; Evolutionary Games
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets

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