I have homebrew apps on my PSP, but I still buy games. In fact, if I didn't have homebrew, I probably would've become bored of my PSP altogether ages ago and just let it collect dust. Emulation kept me interested in my PSP, thus keeping me interested in new PSP games that come along. I think it'd be interesting to compare game purchases between hackers and mainstreamers and see who's actually buying more PSP games and accessories, instead of just assuming everyone with emulators on their PSP's won't buy new games.