I actually think an all digital platform could be fine, provided there are safeguards in place so that the platform owner cannot arbitrarily cut off access to purchases or do some other malarkey to screw the customer over. I have not seen any indication that Sony has something like that in place, and they recently announced that they would remove access
to movies people had bought digitally, which tells me that they likely would do the same thing with games. They also (as
@Bob_McMillan said) wanted to enforce PSN access for
Helldivers 2 players which can be read several ways but my main takeaway is that if we give it the most generous read and say that they merely wanted to curtail piracy by doing online check-ups of people accessing their titles then that is one additional layer of complication for playing the game and if it stops working due to software updates or other hiccups people won't be able to play the game.
I am reminded of
Toy Story 2, where one of those funny outtakes scenes featured a character offered two Barbie dolls roles in the next installments in a way that was meant invoke a sleazy Hollywood producer, which was removed in the Disney+ release in wake of Weinstein's arrest. I can understand Disney not wanting to feature that scene in children's media but it is still removing content; in an all-digital space what is to prevent a platform owner from making sure some content is deleted entirely from existence?
Then there is also the very real issue with all places not having stable digital infrastructure.