In addition the obvious language barrier, different culture and law/regulations are the biggest difficulties I can think of. I don't know about the failed case

In addition the obvious language barrier, different culture and law/regulations are the biggest difficulties I can think of. I don't know about the failed cases, but a handful of big companies tried to expand to Korea and succeeded (e.g. AirBnB, Uber, League of Legends, Clash of Clans). I still wonder how they managed to expand to Korea. Maybe someone like me reached out to them? Anyway, I thought medium, smaller companies or even indie game developers may want to hire someone like me and hopefully grow together.