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MONOPOLISTIC COMPETITION, MULTIPRODUCT FIRMS AND PRODUCT DIVERSITY

机译:单调竞争,多产品公司和产品多样性

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摘要

This paper has two objectives. First, it presents a linear model of monopolistic competition in which weak strategic interactions among single-product firms are allowed for. Second, it extends this model to the case of multiproduct firms, thus showing how product diversity is affected by strong strategic interactions among oligopolists. In our setting, monopolistic competition with single-product firms is a good approximation of oligopolistic competition with multiproduct firms either when varieties are sufficiently differentiated or when scope economies are low.
机译:本文有两个目标。首先,它提出了一个垄断竞争的线性模型,其中允许单一产品公司之间的弱战略互动。其次,它将该模型扩展到多产品公司的案例,从而显示了寡头之间强有力的战略互动如何影响产品多样性。在我们的情况下,当品种充分分化或范围经济低下时,与单一产品公司的垄断竞争非常类似于与多产品公司的寡头竞争。

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