Mora is a brand owned by SMEJ (not even Sony itself), though, and it's still a platform in which you can buy these.
moraは高音質の音楽ダウンロード・音楽配信サイト(月額会費無料)。ミュージックビデオ、ハイレゾ音源も充実。多彩な決済方法でPC、iPhone、Android等から簡単購入。購入した楽曲はいろいろな端末で10回まで再ダウンロード可能。
mora.jp
moraは高音質の音楽ダウンロード・音楽配信サイト(月額会費無料)。ミュージックビデオ、ハイレゾ音源も充実。多彩な決済方法でPC、iPhone、Android等から簡単購入。購入した楽曲はいろいろな端末で10回まで再ダウンロード可能。
mora.jp
Not a SIE initiative here.
Notice how I said 'global'?
I never said it was an SIE project, since I never commented on it(my point was the last sentence mentioned below)
Bolded: Launched by Sony Music Entertainment (Japan) Inc in collaboration with Rhapsody International, with Warner, Universal and other labels on board.
Italics: Missed the global bit actually.
Point was Sony launched a music streaming service in Japan(regardless of division, it was still under Sony-the distinction was only made to seperate it from your intitial comment of 'on digital platforms', of which this was a Sony owned platform), on which you could get music from videogames made by Sony produced games. Which is now shut down.