Again, the closest thing to it is the game discs t. Like you said, there's no precedent so I'm not sure why people would expect to be able to seamlessly transfer cross platform. The closest thing to it would all point not being able to
How is this like discs?
I'm downloading a game on my Switch. A game made by epic games.
I'm signing into my epic account.
No where in any of that is SONY involved at all.