I doubt a single person who is currently enjoying the openness of a Deck, Go, Ally, et cetera will voluntarily blunder back into a freedom-restricting walled garden of any sort.

yeah, I’m sure you could have made the same statement in the early 2000s about ipods and macs and iphones. Those people you are talking about are early adopters, also, it’s already currently flawed since most people who are currently using that format of gaming hardware are using a Nintendo Switch, which is about as walled of a garden as you can have.