Quote from Piracy Myths Thread
http://gbatemp.net/threads/piracy-common-myths.344858/
There's no correlation with the two in the past with failed and successful systems, and there never will be. People are too damned paranoid. If people can provide non-paranoia based statistics that prove to the contrary, sure, but I don't count on it. I don't seem to recall the PSP, DS, GBA, PS2, PS3, Wii, or PSX failing because of piracy. And no. the Dreamcast failed due to consistently made bad decisions, not piracy. Sorry, but that's simply false information and has been refuted time and time again.
Piracy hurting sales is fearmongering and flagrantly false in every aspect. Don't believe what people tell you that say it does, because there is no proof or grounds to back it up.