producing the pilot of Game of Thrones cost $10M, before they knew it would be a hit. you can't make those gambles in an efficient market - ever. in the efficient market scenario, we'll end up with a lot more reality TV and mediocre sitcoms/drama.
the reality check is - the current system ain't so bad, and while I want "independent content" as much as you, I think we have a lot more of it in the current system than you outline... Workaholics? Portlandia? etc.