I guess that's the thinking, but there are sizable expat populations in a lot of countries.

For example there are 3 million foreign residents here in Japan, and fully 165% of them have iPhones and 195% of those want train routing apps.*

(*: all figures based on anecdotes and extrapolation)

Why? To use the examples of the grandparent comment: there are always overseas Japanese who want to cook, or tourists who want to use a local navigation app. I can only come up with legal reasons, or bandwidth preservation maybe.