Verizon was looking out for themselves.. they knew Google plans on selling this unlocked and very reasonably priced. They don't want people coming with a data-heavy phone and not being locked down by a contract..
Come on now, you all know Verizon and how locked down they have their devices.
You are assuming this is a real gphone...recent rumors are its just another android phone. Which the previous rumors never said it wasn't...in fact, look closely at one of the photos of the phone laying next to a macbook, you can see the HTC branding. The gphone won't have a branding.
As people have said, nothing said about this phone makes it sound any better than the droid (after it gets 2.1), and t-mobile certainly doesn't either. I'm not sold on a snapdragon phone being much faster, if at all, than the droid. Case in point: the X10.
As far as verizon passing on it, makes far more sense now that it's been said its just another android phone. Why take away from the Droid and Eris's success? If it was a real gphone, I may have been more curious about verizon passing (if it sounded good). I'm sure more android phones will be released on verizon, and i'm sure one of them will be the passion/bravo or at least similar. So all you snapdragon koolaid drinkers will get snapdragon + verizon at some point in 2010.