The problem is mass media was not around back then. Most film clips were from news accounts, DVD's not being foreseen. And of course filming would have jeapordized the artist's rights, so that would not be allowed (same as now). And there were no real venues...the film of the Beatles arrival to America and Washington DC concert was a film done pay-per-view in theaters, but was really not a popular or viable means of distribution back then, expecially for rock bands that were considered disposable entertainment for the kiddies.
And few of the post-fame concerts would have been worth watching anyway.