The PSP has very few games of its own. Most of the games are IPs established on other platforms.
Contrast that to other platforms that have exclusives establishing identity. DS has Brain Training and Nintendogs. PS3 has Uncharted and LBP. Xbox has Halo and GoW. Wii has Wii Sports and Wii Fit.
The PSP has no signature exclusive game as far as I can tell. Even MH was ported, so it can't even call that its own.
You can't blame this problem on piracy. I'm not sure if it's because Sony was unwilling or unable to create any new IPs, but the the result is the same.
Anyone can guess. It takes no effort to throw out lots of predictions and have some of them be correct. You are not and wiser or better for having your guesses be right. Even a blind man can hit the bullseye.
