Television was transformed in the 1980s. With the advent of cable, the three major networks ABC CBS and NBC lost their monopoly on what americans viewed in their living rooms. In the late Seventies, Time Inc.s Home Box Office became available. In 1980, Ted Turner unveiled the Cable News Network (CNN). Media baron Rupert Murdoch paid a billion dollars for Twentieth Century Fox and, with Barry Diller, created TV's fourth network, Fox.