The Market Structure of Broadband Telecommunications
建立模型并用工程数据检验宽带网络是否属于自然垄断以及是否需要普遍服务监管，发现需求接近当前有线电视水平时可能出现寡头竞争。
The recent growth of the Internet is creating markets for broadband telecommunications networks. In the past, virtually all such ‘infrastructure’ networks have been subject to government regulation. Two reasons advanced for this market intervention are (i) such networks constitute a natural monopoly, and (ii) to achieve ‘universal service’, in which all citizens have access to services. In this paper, we develop a model and estimate it using engineering data which tests if these two hypotheses are likely to obtain for broadband networks. We find that oligopolistic competition is likely to emerge for demand levels approaching that of today’s cable television.