I've heard that Sony is making money with the Vita the way it is right now. They are not going to try to push sales with Western AAA games or advertizing campaings because it's too risky for them since it's possible that Vita's sales could remain low even with new titles.
So right now Sony will focus all its attention to bring Indie games, localize some Japanese titles, and develop low budget First-Party western games (Big Fest, Murasaki Baby, Bordelands 2, Playstation Vita Pets, GOW HD Collection, etc).








