Hi,
I doubt that this will happen at this time. In the future when streaming in both video and sound have enough room for encription that prevents duplication, most of this stuff is not going to show up.
If this were the case most major bands would have already offered something, but they are into the money thing so hard and so bad that they are afraid of even showing it on tv lest you or I copy it and show it on you tube!
Until the music business changes ... completely ... I'm not sure this is going to happen. We just need another major Grateful Dead like band that posts everything, including concerts and fans buy it for streaming from the website ... and they make millions ... so we can finally put the dagger where it needs to be in the recording business of the past!
But way too many bands are afraid to let it out and go for it ... and instead post a song, most of which are not even indicative of the band's work in the long run!