Well Fakku has banned Japanese IPs to stay ok with Wani and Japanese law so they can't order anything from here, it should be the same with jlist and any other reputable store so they need to rely on proxy services for physical items.
However they can still use VPN and buy digital releases which I know is happening, there's sometimes Japanese user or comment passing by but we don't know the scale of happening yet, most likely it's small minority because "according to a 2015 study by the Japanese Cabinet Office, only 30% of Japanese high schoolers use laptops, and only 16% use desktop computers." and Fakku mobile site is little behind in development... :V
Japanese didn't change their law because Japan is cancered by traditionalism, they will literally discard all positive changes or improvements if they require change be it small or big, it was always like that in Japan that's why they were so far behind (or unique if you prefer) in development until Portuguese came but even then they had hard time accepting modern technology.
You can still easily see it today, it wasn't until last year when they discovered gold mine of Steam and most of games are still developed in very archaic way. (grind core 0 moar pls, full hd when?)
Publishers in Japan are trying actively discourage Japanese from buying on Steam through putting extreme price tags on games or Japanese language as DLCs (you thought EA/Ubi were bad? hah) just to support hostageware of Sony and their shit.
Anti-racism laws? Yeah they started making them few years ago lol.
Japan is slowly shifting to modern world but it's still years away at current pace.