If those tribute acts have a decent sense of humour (which I seriously doubt they have) they must have already learned the 'Terminal of Tribute' song to play it first on their concerts. Or, maaaaaaaaybe, the whole setlist with just one song, like Mark did with Rudiger. Remember that?
Brilliant idea. And I foma, I'm no musician myself, but I still don't have any time for tribute bands. There's nothing wrong with strumming along to your favourite songs, of course. And there's not even something legally or morally wrong about going on tour with somebody else's songs, I think. It's just not ... cool. Poor souls.
With classical music, it's a little different - Beethoven isn't in his best shape anymore, so if we want to hear his music live, somebody else has to play and direct it. That said, I don't have much time for classical concerts, either. Not because I don't like the music (I do), but because I don't see the point in listening to something being played in the exact same way, note by note, as I could listen to it at home. If Beethoven was up there on stage, alright, there would be at least some "star" factor, but otherwise ...