I took a few minutes and read a couple of articles. Here’s one that aligns with my point, my memory (of the 1960s, watching the evening news on ABC, CBS, and NBC), and my belief.
I’m sure it’s easy to dismiss it as the opinion of just one academic, but …
I also mentioned the Fairness Doctrine. Its repeal in 1987, midst the peak of the commodification of TV news, threw another napalm-coated log on the fire.
I don’t think it was … ‘always thus.’