Durable goods monopoly with stochastic costs
研究了缺乏承诺能力的耐用品垄断者，其边际生产成本随时间随机波动，发现离散消费者类型时存在市场势力和低效延迟，连续类型时市场结果有效。
I study the problem of a durable goods monopolist who lacks commitment power and whose marginal cost of production varies stochastically over time. I show that a monopolist with stochastic costs usually serves the different types of consumers at different times and charges them different prices. When the distribution of consumer valuations is discrete, the monopolist exercises market power and there is inefficient delay. When there is a continuum of types, the monopolist cannot extract rents and the market outcome is efficient.