Not sure if you’re being sarcastic but “digital only” means the only way to put games on the device is via digital downloads (aka from the web store downloaded via internet).
Each company tries this because it effectively eliminates the third party/aftermarket sales and gets them a monopoly on prices. Never have to lower the price on a game to move physical copies of you don’t have physical copies to store, so games no matter how old can stay at full price for as long as they like. Don’t have to cut your margins by selling at a reduced price to a third party to resell so all the profit comes home.
I know why companies do it, it makes sense financially. But turns out a lot of people aren’t fans of not being allowed to have the option to physically own their own media, even if they don’t always do it.
Obviously you just mandate your game and console be always online and at that point you may as well just live stream the game to their house, don’t need to download if you never actually own it right?? Make them pay per the minute of game time and only unlock the next level after they’ve played long enough! Hell! Why even sell a game?? Just have people pay you for the right to advertise that they paid for it and charge them a daily subscription to keep the rights! Nobody owns anything but you! Art and entertainment is merely a vessel to siphon money from the masses! Purchase their souls for a hit of dopamine! Rent them their own eyes!