Michael Schneider reports for Variety that the Big 3 TV Networks have been losing share and ratings for two decades and that the bigwigs in the top floor of the skyscrapers are getting nervous. They lost 13% among adults between 18 and 49 last year. A writers strike damaged them. The actors are planning to go out on strike this year. They are thinking about dropping an hour of prime time, turning it over to the local affiliates. They are thinking about turning over Friday and Saturday nights to production companies or advertisers, kind of the same way they have already turned over Saturday morning to third party producers. Fox broadcast is already planning to change its Saturday morning schedule from cartoons to infomercials. They are thinking about going off the air and into cable.