As some developers have said, the console market is on a downward spiral. I don't think many casuals would spend $250 to buy a console to play games they have on the home console and pay almost full price for a portable game.
I understand that it's not cheap to produce a console game but something has to change to entice casuals back from smartphone games.
Or what's gonna happen is that consoles and games will go back to premium prices and gear towards the core players.
Almost all the games on the PSVita are ports of home consoles, I like to see more mobile time waste games like puzzle, JRPG, and strategy type games that the NDS and 3DS has more of.