We have to wait for some digital numbers, even Japan being extremely physical based market, things can change. But what is disappointing is that FF is a franchise that sells consoles, the fans get a console just for the game, this is why MS got crazy about it last gen, because this game is a system seller and a very decisive point when choosing wich system to buy.
The point here is SE being able to stop used copies from flooding the market as long as they can so they can benefit from legs for some time..