Ah, yeah comps over many years I'd generally agree. I think many of the famously well regarded live albums are not from a single show, so are technically comps, but usually from a much shorter time period. I think the temptation to pick the best versions of songs on mutliple recordings is too strong for many artists.
I'm thinking of albums like Rust Never Sleeps (I know many hate overdubs), At Filmore East, At Folsom Prison, Stop Making Sense, Nina Simone in Concert, Coltrane Live at Birdland, Built to Spill Live, etc.
Do you hate those ones?
Notable exceptions like Nirvana Unplugged, Live at the Apollo, Harlem Square Club, original Live at Leeds and of course many others.
I like all of those so I was just curious if you were drawing the line in the sand and don't like/have any of the former as I find that intriguing.