Multi‐Product Firms and Product Variety
Multi‐Product Firms and Product Variety
复制标题
多产品公司和产品多样性
DOI：
10.1111/j.1468-0335.2011.00897.x
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Lluís M. Granero
中科院分区：
文献类型：
--
作者：
Ramon Caminal;Lluís M. Granero
本文的目的是研究多产品企业在产品多样性市场供给中的作用。分析使用Chen和Riordan（2007）提出的非本地化竞争的辐条模型进行。首先，我们表明，多产品的公司是在竞争中处于劣势，相对于单一产品的公司，只能出现，如果范围经济足够强大。第二，在双头垄断下，产品多样性可能会更高或更低的第一最佳和垄断竞争均衡。然而，在一个相关的参数值范围内，双寡头大幅限制他们的产品范围，以放松价格竞争，因此，产品的多样性是远远低于有效水平。
The goal of this paper is to study the role of multi-product firms in the market provision of product variety. The analysis is conducted using the spokes model of non-localized competition proposed by Chen and Riordan (2007). Firstly, we show that multi-product firms are at a competitive disadvantage vis-a-vis single-product firms and can only emerge if economies of scope are sufficiently strong. Secondly, under duopoly product variety may be higher or lower with respect to both the first best and the monopolistically competitive equilibrium. However, within a relevant range of parameter values duopolists drastically restrict their product range in order to relax price competition, and as a result product variety is far below the efficient level.
DOI：
10.2139/ssrn.1475707
发表时间：
2006-12
期刊：
International Trade
影响因子：
--
作者：
A. Bernard;S. Redding;Peter K. Schott
通讯作者：
A. Bernard;S. Redding;Peter K. Schott