Man... these last few years have been tough on rock and roll. I was literally looking at buying tickets to their upcoming tour last night.
Unfortunately, I believe you're correct. Over the past few years my wife and I have been trying to catch shows by artists that we grew up with. Knowing that our chance to see them was getting smaller.The next years are going to be even worse. There's too many legends from the 50s, 60s, 70s or even the 80s that are going to meet the inevitable end.