I consider Vita a success at 50 million, but even at 50 million it's only a moderate success. PSP managed a lot more, even though PSP has enjoyed most of it's success in Japan, not so much elsewhere. UMD failed, both as a game format and a video format.
At this point, I don't see Vita really picking up steam without either a significant price drop (at least 33% like 3DS) or some kind of impossible cavalcade of AAA software, or both.







