@ skeezix: Because there is no middle ground. You're either with Fanboy Group 1 or Fanboy Group A.
If you have both, you're a traitor.
...
Although in this case, they're totally different systems: Pandora is a general-purpose UMPC, whereas PSP is cheaper gaming-and-media-only affair.
Perhaps a more interesting question is, what would the big gaming hardware companies have to produce to get you to buy that instead of the Pandora?
If somebody produced something exactly like the Pandora, I guess I would buy whichever one came out first, unless one clearly had superior software.
But nobody else seems to be interested in the UMPC market the way Pandora is.