The research reported here takes a complementary approach to the direct user/consumer studies, by measuring experts’ perceptions of the likely impact of new interactive media (NIM) on different product markets. This has two benefits. First, it provides a different (and, arguably,...

In this chapter, we review research on the Internet's impact on ‘horizontal’ and ‘vertical’ competition. First, focusing on horizontal competition, we examine theory and empirical evidence on the extent to which the Internet increases market efficiency, as well as possible underlying...