Nintendo is a Japan-centric company now. It's also partially Iwata's fault.
I really think this happened because of the twin success of the Wii and DS. For a while, the interests of both West and East seemed to merge and become one, resulting in the Wii and DS having expansive Nintendo-published game catalogs that are largely JP-facing in nature.
That, and they took the third-party support from Western publishers for granted. Take a look at all the games they released for the Wii and DS, even if a lot of them are shovelware.
I WON A BET AGAINST AZUREN! WOOOOOOOOOOAAAAAAAAHHHHHHHHHHHHHHHHHHH
:3