Piracy ruining the PSP?

The PSP has had some had some positive hardware sales figures following the release of the PSP-2000, but its games fail to make it to the top of software sales charts. But is piracy to blame? A NeoGAF member went ot a torrents site and compiled a list of torrent files for some recent big games that were released on the PSP. A Metal Gear Solid - Portable Ops torrent file had been downloaded 231,054, Burnout Dominator - 269,486 and Ratchet & Clank - Size Matters - 197,113.