As media and communications industries enter the digital age, policy makers are confronted with unique new challenges to ensure competitive, consumer-friendly markets. EPI's book Cable Mergers and Monopolies provides a detailed study of the increasingly concentrated cable TV industry, which has dominated the video market for decades and is rapidly gaining dominance in the high-speed Internet market. The book combines the analytic concept of platforms with traditional structure, conduct, and performance analyses from the field of industrial organization. It also identifies innovative policies that federal, state, and local authorities can implement to prevent abuse of consumers and promote competition in digital information markets.