Bootlegs exist because WE NEED to hear every single live moment or rehearsal or demo from our beloved artists. That's why we pick them and we "collect" them for the very same psychological reason someone becomes a collector. My point is that if someone (probably the artist or his representatives) blocks a bootleg release MUST replace it with the original release of the same art-event. In different case, the artist blocks the history of music to be revealed and hides his artistic self from us. This is as a bad behaviour as the hunger of the bootleggers for easy money, I tent to believe.