I have come to the conclusion that yes, all these shows probably still exist. I believe whats holding the release of any of them up is that the people that own them know what they have and dont want to just let it go for free. Sharon will not seemingly pay for anything when it comes to footage as she believes all of them were recorded illegally and the owners have no right to them. She is correct about that and its been stated many times that the venues needed written permission in order to record the band.
The time for the Osbournes to cash in on any of this was the 30 years after anniversary, nothing will get bigger than that as far as a sales pitch. By the time the 50th the comes around Sharon and maybe even Ozzy will be dead, doubt the latter though
I forget the guys name that shot the NM footage of OTM/CROWLEY that came with it. I am sure he is easily finable and have thoughts of tracking him down and asking how that whole situation went down with the Osbourne camp. Did he ask for anything? Was he just so kind and offered it over for free and they they offered him something as gratitude for not trying to cash in? Stuff like that i would want to ask that guy.
But really though, Bob offered the grail to Sharon and she offered what 5k or 15k I think it was? As far as music history goes thats worth 1000 times more than any Randy footage out there I feel.
I think all this footage is going to start coming out over the next 20 years or so as people start passing away. There kids or others will inherit this stuff and either A just upload it to the net or B, cash in on it for really cheap. I give props to all these people that can actually hang onto this stuff for so long.