Seems like the mobile phone market and it's games are a viable system they can use.
You don't get a physical copy when you download games for your phones now.
The best you can do is burn a cd/dvd of a backup of everything or have your digital (email confirmation) that says you downloaded a product or in your online (google play) system you buy from.
So there is a platform that has shown it works for games.
The sucky part is all of the people who will be out of work due to this (gamestop as you mentioned).