Theres more people doing it then you would think, I mean how often do you get kickstarter spam from someone wanting you to pay for their feature?
whilst very few distributors seem interested these days in features without a 'name' for them to stick on the poster and there is a lot of talk of self distribution theres no 'hub' for them. No equivalent to an indie band sticking their album on itunes where everyone can find it.
You know, unless you get a sales agent who will put it on itunes and between them take something like 70% of your sales.
Theres also the logistical side of things, you can shoot a youtube short in an afternoon, a feature takes weeks (unless your going French New Wave) and getting locations, crew and cast to commit for that long is not nearly as easy.
But I agree theres no Robert Rodriguez or Kevin Smith to inspire the latest bunch of filmmakers in a way the dude who made Red State and the Spy Kids guy never will.