kber81 on 20 August 2007
Piracy. Personally I believe there is broad group of users who would never buy a PSP if there was no piracy. They lower attach rate it's obvious. Software sale would be on the same level even with much lower userbase. It doesn't mean PSP owners buy less games. Truth is Sony makes some cash even on pirated unit.
Edit:
Personally I bought 9 PSP games so far.