You're still missing the point. There is no way to buy a game for Xbox without going through Microsoft's official channels and giving them their huge cut. There is no way to buy a game for Playstation without going through Sony's official channels and giving them their huge cut. There is no way to buy a game for Switch without going through Nintendo's official channels and giving them their huge cut.
Being able to buy the same game on different consoles is immaterial. The stores themselves are the monopoly.
>None of these stores do my email, dating, finance, math, fitness, banking, web. They're not fitting the computer role like laptops and smartphones.
What difference does this make? If they did these things, would it suddenly matter that the only way to get software onto this platform was to give 30% of revenue to the console manufacturer?