Wouldn't surprise me if, assuming this actually comes to fruition, certain game stores such as epic or any of the non-Steam/GoG stores end up implementing the selling of your digital games in the most absolute abhorrent ways imaginable. Things like making the service to sell your games on their shops run at a snails pace, being forced into a profit cut because you use their service, or just flat out editing your account to make you break ToS and then deleting your account.