Different from the USA, 7-11 in Japan and China are mainly self checkout at least, so they can technically run a store with less people since they don’t have to man cash registers to get people checked out.
But who's going to unlock the expensive items from the plexiglass case?
This. Also there is a social backlash against Vietnamese, Chinese, and Thai service workers in Japan now (the people who tend to be working the counter at a kombini, but apparently Asians all look the same to Western HNers), as well as Western tourists.
Edit: can't reply
> I doubt many Chinese youths want to work for minimum wage in Japan
Chinese are the 2nd largest nationality of foreign agricultural and food workers in Japan [0].
As long as the median household income in China [1] remains below the minimum wage in Japan [2], members of the bottom half of Chinese society will continue to emigrate there, Korea, and other countries to work, that said not at the same rate as was seen a decade ago.
[0] - https://catalog.lib.kyushu-u.ac.jp/opac_download_md/4738336/...
[1] - https://www.stats.gov.cn/english/PressRelease/202507/t202507...
[2] - https://ja.wikipedia.org/wiki/%E6%9C%80%E4%BD%8E%E8%B3%83%E9...
I don't know about China, but I live in Japan and most konbini I have visited still have real human cashiers.