Divestiture of Nippon Telegraph and Telephone
Divestiture of Nippon Telegraph and Telephone
复制标题
日本电报电话公司的剥离
DOI：
10.1287/mnsc.42.9.1326
复制
发表时间：
1996
影响因子：
5.4
通讯作者：
T. Sueyoshi
中科院分区：
文献类型：
--
作者：
T. Sueyoshi
本文讨论了日本政府是否应该在1995年拆分NTT Nippon Telegraph&Telegram，因为美国联邦政府在1984年迫使AT&T American Telegram拆分成长途电话和本地电话公司。自1985年NTT私有化以来，剥离NTT一直是日本主要的产业政策问题。政府剥离它的决定可能不仅会影响日本的电信基础设施，还会影响世界上的全球电信和信息行业，在这些行业，许多普通运营商现在面临着从监管到竞争的环境变化。这项研究的一个独特之处在于，它使用了八种不同的估计技术来获得非技术转移的成本函数，从而避免了许多实证研究中出现的方法论偏差。这项研究证实了NTT保持了成本的次可加性，但它未能在观察到的时间段内确立自然垄断的地位。然而，它也发现，NTT的资产剥离不会给日本电信消费者带来降价好处。这一研究结果将为指导日本政府对这一大规模产业政策问题的审查提供经验证据。
This article discusses whether the Japanese government should break up NTT Nippon Telegraph & Telephone in 1995, as the U.S. federal government compelled AT&T American Telephone & Telegram to break itself into toll and local telephone companies in 1984. The divestiture of NTT has long been a major industrial policy issue in Japan since the common carrier was privatized in 1985. The governmental decision to divest it may influence not only the Japanese telecommunications infrastructure, but also the global telecommunications and information industries in the world, where many common carriers are now facing an environmental change from regulation to competition. A unique feature of this study is that it employs eight different estimation techniques to obtain a cost function of NTT, so that this research avoids a methodological bias occurring in many empirical studies. This study confirms that NTT has maintained cost subadditivity, but it has failed to establish the status of a natural monopoly in the observed time period. However, it also finds that the NTT divestiture will not produce a price-reducing benefit to Japanese telecommunications consumers. This research result will serve as empirical evidence for guiding the governmental review of this large-scale industrial policy issue in Japan.