There are a lot of advantages in digital sales for Sony and MS too.
Digital sales work the same way than the App-store work for Apple.
You have to go through Sony or MS store. This means they will take over the retailers margin and make more money out of every game sold. And they can do this and still reduce the overall price for customers...( selling at game at 50$ on PSN probably brings more money to Sony than selling the same game at Gamestop for 60$..)








