It would have still been an issue because the root of the problem is that there are a lot of regions where PSN is not supported and you can’t make an account even if you wanted to. The game was being sold on Steam in those regions, and so in practice it would have been like saying:

Please note that in a future update we will take away your ability to play with no recourse unless Valve is willing to refund your purchase. Take it up with them.