> Somebody should do a video startup that values free expression and adult topics of discussion, and eat their lunch.

If you can find a way to get the people either providing or consuming the media to pay, that might work (though not so much at eating YouTube's lunch as serving a different market).

If you want to monetize that with advertising, good luck: YouTube's content restrictions follow the general trend of big advertising-supported media, because its what the paying customers for that want.