I enjoy reading threads like this. The only thing I can add is that ultimately, history, and the market, together, sort it all out quite nicely in the end.
What it got me thinking about was rock bands. Rush is a great example. They were musically so far out ahead of their time that it took until Moving Pictures for the music-buying public to really catch up. The flipside is Triumph. Equally talented and agressively forward-thinking, but whatever it is that Rush had, Triumph didn't.