Aw, man...how could I have missed this one! I actually work in TV!
"Network", 1976. It's about the evolution of television from public service & entertainment to the modern Corporate Billboard that it is today. The plot involves the bosses insisting that the news division of their network should become another profit center, rather than part of their corporate responsibility.
http://www.imdb.com/title/tt0074958/
"This instrument can teach, it can illuminate; yes, and it can even inspire. But it can do so only to the extent that humans are determined to use it to those ends. Otherwise it is merely wires and lights in a box."
-Edward R. Murrow
"..you've got to say, `I'm mad as hell! And I'm not going to take this anymore!!"
-Howard Beale