Delhi- The $US4.5 billion Indian broadcasting sector is heading for a war of attrition and only those with courage, capital and content are likely to survive and prosper. That was the key conclusion from the India Digital Networks Summit, staged in Delhi on Oct. 17 by Media Partners Asia (MPA) and Indian Television Dot Com (ITV). Intensifying competition, growing digital pay-TV penetration, the launch of hundreds of TV channels and the entry of new investor groups all will represent a significant cost for media owners, pay TV platforms, and advertisers as regulation further squeezes the pricing of television channels, the summit was told. Many channels will look to grow and capture their share of advertising through significant rate increases while the emerging digital cable and satellite platforms are likely to see their margins erode in the short term as they look to penetrate a critical mass of consumer homes.