It's a shame there's not an easy-to-use version of Twitch where you pay your own bandwidth costs and whatnot. It would make the economics a lot clearer to everyone.
The problem is that basically no content creators could self start in that world. Right now, most of these companies benefit from having a massive pipeline of kids dreaming to be stars, who all shoot their shot at streaming. Some inevitably have a knack, or catch some fad, or something, and can generate massive revenue and replace the people who have been chewed up and extracted by the machine, because it's basically designed to burn you out.
Any content distribution system that doesn't give away a free tier would have to build it's own pipeline for training, filtering, testing, and motivating creators.