Impact of Copyright Protection on Re-creation of Digital Contents When Expression and Idea are Divisible
Impact of Copyright Protection on Re-creation of Digital Contents When Expression and Idea are Divisible
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当表达和思想可分割时版权保护对数字内容再创造的影响
DOI：
10.1007/978-981-13-7036-6_5
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Takuya Nakaizumi
中科院分区：
文献类型：
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作者：
Yusuke Kasuya;Takuya Nakaizumi
我们考虑的情况是，表达和思想是完全可分割的，版权保护不能适用于非常紧密可替代的衍生作品。即使这些作品的思想非常相似，替代也被视为独立的作品，而不是侵犯版权。因此，基于类似的理念提供紧密可替代的商品是可能的。因此，版权所有者的垄断租金可能会降低，因此他们面临无法收回初始成本的风险。假设边际成本为零的Bertrand竞争，考虑到数字内容的性质，我们证明了在垂直产品差异化中，模仿者没有进入市场的动机，除非模仿的质量足够高。即使能够进入产品差异化的市场，他们也不竞争，不细分市场，生产差异化的作品。因此，在一般版权制度下，原始生产者的垄断利润得以维持。
We consider the case in which the expression and the idea are completely divisible and copyright protection cannot be applied to very closely substitutable derivative work. Even if the ideas of these works are very similar, the substitute is regarded as an independent work, and not as a copyright infringement. Therefore, it is possible to supply closely substitutable goods based on similar ideas. Thus, the monopoly rent of the copyright holders might decrease, so they face the risk of failing to recover the initial cost. Assuming Bertrand competition with zero marginal cost, considering the nature of digital contents, we show that imitators have no incentive to enter the market in vertical product differentiation except in the case of a sufficiently high quality of imitation. Even if they can enter the product-differentiated market, they do not compete and divide the market to produce differentiated works. Thus, the original producer’s monopolistic profit is maintained under the general copyright system.