数字产品盗版:基于Hotelling模型的竞争分析和政府政策的选择

Digital Piracy:A Competitive Analysis and Government Policy Based on Hotelling Model

数字产品的知识产权保护问题越来越受到重视,政府政策对知识产权的保护起着重要作用。研究了盗版对数字产品企业的定价、企业利润及创新动力的影响,通过构建Hotelling模型得出:在不考虑网络效应的条件下,当市场上存在单个垄断商时,政府应采取最严厉的保护政策;然而当市场上存在双寡头企业竞争时,盗版在一定条件下能够降低企业之间的价格竞争,增加企业的利润和创新动力,并且使社会福利增加,此时政府应采取较宽松的政策。

The protection of intellectual properties of digital products,such as computer software,audio and video,has become increasingly important.The government policy plays an important role on the intellectual properties.In this paper,we study the impact of the digital piracy on firms profit,the pricing and the innovation incentive.In this paper,we study the impact of the digital piracy on firms＇ pricing,innovation and profit.We build a Hotelling model and theoretical results show that,in the monopoly market,the government will take the most stringent protection policy.However,in the duopoly market,the digital piracy can reduce the prices of competing firms,increase firms＇ profit,and then increases social welfare.Thus in this case the government should take a looser policy.