Very true, but as WoW is the biggest it gets the biggest share of the blame. I'm not confident that anyone would invest time/money in a new MMO that didn't try to emulate WoW. This just isn't an mmo thing, how many companies are innovating any kind of product? Apple and Bose come to mind but one had a CEO for life and the other isnt publically traded. Why should a CEO care what happens to their company 2 years from now when his bonus is tied to this years stock price?
Door is wide open for some Indy developer to clean up on the mmo market...but that said, maybe it's just the end of an era.