

Japan often continues to use tech beyond the point other developed countries consider it obsolete (their government only recently transitioned away from floppy discs). It wouldn’t surprise me if Sony was manufacturing the Mini- formats in small quantities for the Japanese market only.
Per the “ancient” “Chinese” curse, “May you live in interesting times,” I suspect.
(The phrase is actually the brainchild of a British diplomat who was posted to China for a while sometime around 1900, if I recall correctly.)