How about a different approach? Ok, this is big (or you'll probably tell me it's been tried and doesn't work

)
Sort of "small biz" union, where:
-> participating PRODUCERS would stop giving away anything for free - max 1,2 photos/ few seconds teaser per set, but these scarce teasers would be of highest quality to hopefully get punters to sign up (Hi-Res photos, HD vids).
-> participating AFFILIATES would never promote any non-union site on sites where they promote union sites.
I believe there is place for high quality content, and especially for niche content to be sold. The more niche thing one wants, the less satisfying tube sites are.
Of course these small teasers and promo tools would have to kick ass, and even a new platform can be programmed to stream/show only such videos, thus protecting and separating them from the rest of the crowd, and making it hard to go to torrent sites.
Another thing is, technology can be created to uniquely but invisibly mark each downloaded piece, so whoever puts your content on torrent/tube, you are able to ID him easily - should be motivating enough for people not to do so.