It's actually amazing, and perhaps a little sad, how quickly we've become spoiled. Bands didn't used to release concert vids every tour, or every two or three tours. You got them when you got them.
I love Rush, and pretty much every concert of theirs is great, but I think they may have actually raised the bar a bit too high. They made a lot of concert videos, and now it's practically expected to get a concert vid for every tour, or at least every couple of tours. And as we all know, Dream Theater are often influenced by Rush, but the same might be said of many of their fans.