I do think that people who wait out in the cold, or go to great lenght to secure a console, and spend $700-800 on launch day do want to justify their purchase with something that is not available on the other platforms.
I know I would.
Something needs to justify the purchase now, otherwise why not wait until March to pick one up? You would save yourself alot of hassle.
Those people who wait out in the cold are the die hard PS fans. They'd walk through hell to get one. They want the console even if it had only one game. I to went to great lengths to make sure I could get a PS3 come launch and it wasn't because of just the launch games. If all the launch games sucked I wouldn't think that that would mean the PS3 sucked and wasn't worth what I paid for it. I also went to great lengths to get a 360. Was I impressed by the games I got for it. Not really. Does that mean the 360 sucks. Of course not.
Its a luxury item. People will get it if they want it. Some people think spending only 200 dollars on a console is nuts too. Hey I think spending 500 bucks on a pair of shoes is nuts myself, but hey to each his own.