A Research on Unauthorized Copying by Using Networts : from an Economic Perspective

本研究对网络非法文件共享进行了调查，并从制度和理论的角度进行了分析。我们访问的国家有中国、韩国、台湾和越南，在那里我们采访了音乐家、作曲家和学生。我们可以清楚地看到，发展中国家的非法行为与发达国家的情况有多大的不同。在这些国家，非法cd和dvd参与了现场表演的宣传。大多数年轻的音乐家依靠这些来让人们知道他们的名字。关于文件共享，例如在越南，人们没有得到它，因为使用它的交易成本比非法cd和dvd高得多。除了这些考虑之外，我们还从理论上分析了复制控制（DRM）以及非法复制对最优定价的影响。我们还考虑了数字时代的广播版权问题。

In this research, we investigated illegal file-sharing on the Internet and did analyses from an institutional and theoretical viewpoint. The countries we visited are China, South Korea, Taiwan, and Vietnam, where we did interviews to musician, composers, and students. We could make it clear how situations about illegal behaviors in developing countries are quite different from those in developed onesIn such countries, illegal CDs and DVDs take part in promotion for live performance. Most young musicians depend on those to let people know their names. Concerning file-sharing, for example in Vietnam, people did not obtain by it, because transaction costs to use it are prohibitively high compared to illegal CDs and DVDs. Besides these considerations, we theoretically analyzed effects of copy control(DRM) , as well as illegal copying, on optimal pricing. We also consider copyright of broadcasting in the digital era.