For cable TV companies in the U.S., August 28 was a day to celebrate. Ending several years of regulatory battles, a ruling by the U.S. Court of Appeals for the District of Columbia Circuit came down in favor of Philadelphia-based Comcast, which sought to overturn the Federal Communications Commission’s contentious 30% market share limit on cable TV operators. “Arbitrary and capricious” is how the appeals court described the FCC’s limit. Not everyone is happy about the ruling, however, with some media watchdogs warning about the dangers of cable monopolies. In contrast, Peter S. Fader , professor of marketing and co-director of the Wharton Interactive Media Initiative, sees this as a “golden age” for the industry and consumers alike. Fader spoke with Knowledge at Wharton about why the recent ruling is likely to make the landscape more, not less, competitive. An edited transcript of the conversation follows. Knowledge at Wharton: Comcast is the biggest cable carrier in the U.S.…