Another problem probably is the amount of cover songs. They've always edited (at least some of) them out of official releases.

1992: An Evening With had "Baby What You Want Me To Do" in there on the MTV broadcast, they scrapped it for the VHS release.

1995: Jumpin' Jack Flash, I Don't Like Mondays and Rockin' All Over The World weren't used.

2000: Both the Bad Medicine and I'll Sleep When I'm Dead performances got castrated by deleting Rockin' All Over The World and Shout.

2008: Glad All Over and Start Me Up remained unused for the MSG DVD.

I don't know how huge the amount of royalty fees is that they have to pay for releasing cover material, but as the Hammersmith set was about half cover/half original, he'd have to spend even more money on it.