Japan's immigration policies are actually pretty welcoming to educated foreigners. They publish all the rules, if you meet the criteria (basically getting any w

Japan's immigration policies are actually pretty welcoming to educated foreigners. They publish all the rules, if you meet the criteria (basically getting any white collar job here will do the trick) then you can get a work visa, and there is a well-documented and formulaic long-term path to getting permanent residence (which is very fast if you meet the highly skilled professional criteria, which actually aren't a very high bar; you can get most of the way there by having a college degree, reasonable pay and not being old). The problem is more that they speak a language that people do not want to spend time learning, do not have a particularly dynamic economy, and have issues with work culture, gender inequality, and so on that turns off many foreigners from making the jump.