"The retail model has always been and still is broken, from a developer's point of view. Driving discs in a big van all over the world is really inefficient. I don't understand how anyone can make money out of this. Driving a truck to Japan just to get it delivered to people when they can get it from the net? Hopefully the new consoles will embrace the download space even more." - Playdead boss Dino Patti

I'm pretty sure millions of businesses use this method of shipping for products, and they manage to make a profit no problem. It may not be the most efficient method for releasing games in today's age, but it's still the method that will reach the most people.