CAJ | 학술논문

本文立足于网络外部效应，认为在没有政府规制或规制权重不是更多地赋予消费者时，尽管网络型公用产业的资产是沉淀性的且专用性强，但投入之后议价优势不会从投资者转移到消费者，投资者利润不会被消费者剥夺，不愿投资或投资不足的情况不会出现。这种观点至少对电信业是适用的。对于像电信业这类具有网络外部效应的产业，我们的主要结论是：随着使用者的增多，消费者对产业提供的产品偏好增强，使得需求曲线外移且变得更陡，进而使消费者效用增加，产业的市场势力增强，尽管产业能够得到的潜在消费者剩余的份额变小，利润却增加了。在此情形下，网络型公用产业的投资是连续而充足的。
본문립족우망락외부효응，인위재몰유정부규제혹규제권중불시경다지부여소비자시，진관망락형공용산업적자산시침정성적차전용성강，단투입지후의개우세불회종투자자전이도소비자，투자자리윤불회피소비자박탈，불원투자혹투자불족적정황불회출현。저충관점지소대전신업시괄용적。대우상전신업저류구유망락외부효응적산업，아문적주요결론시：수착사용자적증다，소비자대산업제공적산품편호증강，사득수구곡선외이차변득경두，진이사소비자효용증가，산업적시장세력증강，진관산업능구득도적잠재소비자잉여적빈액변소，리윤각증가료。재차정형하，망락형공용산업적투자시련속이충족적。
This paper studies the effect of network externalities on total surplus＇s change. We attempt to address the following question, will network utilities lose their advantage in bargaining due to their enormous sunk cost and specific assets？ On the basis of network externalities, our findings are in sharp contrast with that of David M. Newbery in his widely known book. We find that consumer preference for network externalities product rises with the number of consumers, which makes the demand curve shift to north - eastern and steeper. This situation makes consumer utility and profit of network utilities rise. At last, we draw the conclusion investment is continuous and adequate unless the weight of regulation placed on consumers is more than that on Industries.