Without the "content provider dinosaurs" there would be no appreciable amount of content for Netflix, Hulu, Amazon, Apple, etc., to build streaming services out of. When it comes to TV most often the content provider is also the content producer (the entity that foots the bill to make the content). HBO pays the production costs of Game of Thrones specifically so people will pay for cable plus HBO. FOX pays the production costs to make The Following so people will tune into FOX Monday nights at 9/8 central.
Content creators (people that come up with the ideas and then execute them once they get funding) shop around ideas/concepts to TV networks, not finished products. That's what pilot season is all about. You make one episode as a proof of concept, show it around to different networks and hope that someone likes the idea enough to foot the bill for a whole seasons worth of episodes.
As another poster mentioned, TV revenue is all tied to ad sales which is tied to viewership. It's completely opposite from the business model the music industry uses and a much more complicated one.