most of the 70's/80's/90's bands today aren't much different than cover bands. I saw Lynyrd Skynyrd last year, there's one original left. Styx has two. Foreigner has one. Seeing Queensryche without Geoff Tate would be almost criminal.
Skynyrd has an original? I'll look it up, but I thought Collins is dead and I thought Powell and Rossington are off the road. I mean, you take out the guitarists, Ronnie, and the piano, what's left?
edit - gary rossington is still touring