According to this its 56% digital sales. (2015)
I wonder which future console will be the one that is download only.
I don't like it anymore than quite a few others here, but it is reality. Digitally leasing games to people willing to buy a lease on a game is a real thing. Stepping away from mid-large sized third parties that can easily afford to throw around physical media, you have a whole other world of those who jsut can't, and on another level those who can (that are big) but are too chicken to make a physical release in your region if any. That last bit, I Am Setsuna is physical in Japan, but nowhere else. For the big mass of it, you have a lot of them which make great games but no backing to take it beyond Steam, GoG, console/hh networks, or a private distribution model. They're not any lesser games, they're just not likely to have a physical release.
Sometimes you hit gold, and then it does go physical -- Terraria, Retro City Rampage DX, even Duck Tales Remastered which Capcom pussyfooted over originally.
Let's be real here within the first week the system was out there were more digital than physical releases, but in that realm of the entire picture you had a lot of variety really and what is there quite a lot of it really was worth the price of admission if you could hold it or not. MJ there has a good notable start of a list there with the non-on hand stuff which is wider as there were more Neo-Geo MVS titles, the one I noted I Am Setsuna, and there are others including even some re-releases like World of Goo. It doesn't have as of yet a 1vs1 fighter, or a FPS game of any sorts, but you have RPG, adventure, party game, racing, platformer, arcade action of many sorts, and more already as offerings. To call what is out there so far slim or weak for a 2 week old system is just playing (anti) favorites.