You mean, anywhere other than the world's largest unitary single-language market not subject to government censorship?
Europe has too many languages. China requires you to give up 50% or more of your company for the "privilege" of doing business there, plus you must deal with censorship with respect to the type of content your game(s) can include. India has an extremely heavy tax burden. Japan and Korea are too small. Latin America, as a whole, is generally a rounding error in terms of video game sales, for various reasons.
The U.S. is the only place where it makes sense to launch. Especially when you're a U.S. company, with U.S. employees.
Is supporting multiple language matter? They should localize apps and games as usual. I suspect that fast internet connection and putting servers near users are matter. Seoul and Tokyo looks good place for connection and population density.
Not to be offensive, how many countries out there with big tech companies shaping the technology? Maybe Sony from Japan a little and except their PlayStation, I can't think of anything they do these years, unlike in 80s.
For a change it would be nice if they started literally anywhere else.