I for one would be glad to pay for much of the stuff I have listened to here. Especially if we could get some videos of these performances. There is no sense making a determination to get something for free stand in the way of having access to it at all.
The plain fact is, if you do not support the art you love, you have no right to expect to be able to hear - or see - it. Information may want to be free, but a man's labor - even a labor of love - should be compensated. Thank God for Bill Graham and his determination to make this stuff available. But if a few dollars will make it available faster, or in a better format (higher bitrate or resolution) count me in!
By the way, I was a Stuyvesant graduate, class of '69, just a few blocks from Fillmore East, and went to NYU after that, so I was there to see so much of the stuff on Wolfgang's Vault!! I went to Woodstock, too.