非线性需求下具有网络外部性的二级歧视定价研究

Second Degree Price Discrimination with Network Externality under Nonlinear Demand Function

研究了非线性需求函数条件下产品存在网络外部性时,垄断企业采用对需求区间分段定价的方法进行二级歧视定价的策略。首先分析了单阶段垄断企业二级价格歧视的静态定价策略,接着给出了在一个较长时期内垄断企业分两阶段进行二级歧视的动态定价策略。结果表明网络外部性不影响最优需求区间分段单调递增的性质,但价格随网络外部性的增强而相应提高,且第一阶段的价格高于第二阶段的贴现值。

Strategy of second degree price discrimination is studied in the market with network externality and nonlinear demand function, through different charge according to different segment of the demand curve. Firstly, the static pricing strategy by second degree price discrimination is studied in one stage. Then, the dynamic pricing strategy by second degree price discrimination is studied in two stages under the monopoly＇s maximal profit. It is shown that the optimal segment of the demand curve is not affected by network externality, but the price will be improved according to the higher growth of network externality, and the price in the first stage is higher than the discounted present value of the price in the second stage.