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.
They were still making MiniDiscs and MiniDV tapes? That seems more of a surprise than the Blu-ray discontinuation.
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.