The Old WHDH-TV Channel 5 equipment (was Re: The courtship of NBCby the Herald-Traveler)

[Maureen Carney]

I'm guessing CBS gave up because already operating stations in Chicago and Los Angeles became available to them. That was the difference between NBC and CBS - NBC wanted control so bad they built everything from the ground up (making sure there was programming to sell the RCA sets) and CBS was content to buy what it needed as it became available (color broadcasting being the exception).