You know what would happen if Microsoft stop trying in Japan. It would make Japanese developers less likely want to develop for the system. You have to think of it like this, if you are a developer in America, would you want your own country to have the ablitiy to play your game... And if the console you choose doesn't sell well in your country that you put your games on, then you will want to put your games on the console that is selling well in your country... Its an ego thing as well as it is a money thing. Don't make a damn if you got paid a lot of money for a game that no playing in your country...
Mistwalker and Capcom are examples of this why Microsoft needs to keep trying... Mistwalker, now making a game for the Wii. Capcom, made games for Xbox 360 but are also starting to port them over to the PS3... To even to a lesser exent, Tecmo did it. Ninja Gaiden came to the PS3, three years later mind you, but they did it....
I'm just saying...
