For more than 60 years, TV stations have broadcast news, sports and entertainment for free and made their money by showing commercials, the Associated Press reports. That might not work much longer. The business model is unraveling at ABC, CBS, NBC, Fox, and the local stations that carry the networks’ programming. Cable TV and the web have fractured the audience for free TV and siphoned its ad dollars. The recession has squeezed advertising further, forcing broadcasters to accelerate their push for new revenue to pay for programming. That will play out in living rooms across the country. The changes could mean higher cable or satellite TV bills, as the networks and local stations squeeze more fees from pay-TV providers such as Comcast and DirecTV for the right to show broadcast TV channels in their lineups. The networks might even ditch free broadcast signals in the next few years. Instead, they could operate as cable channels–a move that could spell the end of free TV as Americans have known it since the 1940s.