摘要
利用纵向产品差异模型,研究了在具有网络外部性特征的双寡头市场结构的产业中,产品税收和网络外部性对产品纵向差异化的影响.考虑政府对所有产品实行统一税率的情形,政府首先制定税率;然后,企业选择其产品质量;最后,企业进行价格竞争.研究结果表明,网络外部性和税收将使企业产品质量差异偏离社会最优质量差异,小量税收将提高社会福利,并随网络外部性的增强而增加.
We examine the impact of commodity taxation and network externality on vertically differentiated product market in an oligopoly. We have considered the case of uniform excise tax rate. The government first commits to the tax rate. Then firms simultaneously choose the qualifies of their product. In the following stage they will compete in prices. We show that the tax and network externality have effect on product qualities equilibrium to divert the optimal qualities differentiation. And a low tax rate will always improve the welfare. The welfare increases with the increace of network externality.
出处
《管理科学学报》
CSSCI
北大核心
2005年第4期43-49,共7页
Journal of Management Sciences in China
基金
国家自然科学基金资助项目(70172001).
关键词
网络外部性
商品税
产品纵向差异化
network externality
cormnodity tax
product vertically differentiation
