I learned the language during high school, working in Japan after that, then doing a lot of translation work work back in Australia. In recent years we just visit visa-free for three months each year, and stay in this old house up north in exchange for doing a few jobs around the place to stop it deteriorating further after the winter chill.
If we wanted to live here full-time we’d have to get local jobs, but I have zero interest in working for a Japanese company. Would sooner start my own business, which has gotten easier recently but is still highly monitored for the first few years.