Will console MMOs put the nail in the coffin of PC gaming?
No. PC gaming has been dead or dying for the past two decades....according to the industry critics/magazines. And that's a lie. Furthermore, it's a lie perpetuated only by the game critics, magazines and console only websites.
PC GAMING IS NOT DEAD OR DYING. Games like Spore, ET:QW et al prove it. And last cycle (xbox/ps2) it was other games. PC gaming will not die due to two reasons: MASSIVE install base (pretty much negating any configuration woes) and NO BARRIER TO ENTRY. Anyone can get three guys together (code, art and sound) and create something, essentially for free if they want.
So here's my big F*CK YOU to all idiotic websites, magazines and 'gamejournalists' who have been crying wolf for the past decade. The only thing that's happened is that there is this perception, created by those aforementioned idiots, that pc gaming might be less than it used to be...but the facts don't really bear that out. As soon as Diablo 3 or Starcraft 2 or whatever don't sell millions of copies, then you might begin to speculate on pc-gaming feeling a little green...but not before that.