this study we examine the competition between IPTV and existing new media services in South Korea. To address this question, the study uses a niche theory in which media are modeled as competing and coexisting on scarce resources. The results reveal that there is intense competition between cable TV and IPTV and that IPTV is a complementarity rather than a complete substitute for Web TV and mobile TV. Finally, we draw business and political lessons for the future design of the IPTV industry based on the experience of South Korea