It is coming, PC Clones only happened due to IBM not being able to legally prevent it taking off.
It is no accident that the laptops as desktop replacement are just as vertically integrated, most people not using laptops have NUCs and game consoles, and custom built PC towers are seldom seen outside hardcore PC gamers.
Working with all major systems I have to say I don't have the feeling that the commercial OS is getting any better. If anything they are getting worse.
What is getting better are the likes of KDE. Where a good decade ago running Linux still was a pain where it didn't work, nowadays it mostly just works, the System UIs are more usable, more customizable and in many cases better than any of the commercial OS for a while now (and yes, that includes MacOS).
And that's one of the strongest criticisms of Stallman's Free Software. Instead of providing alternatives, they are just against them.
Of course they tried to provide alternatives, but they are still stuck 30 years behind, they haven't gotten to phones yet. During Covid they had issues getting videoconferences to work.
AT&T did that in first place, without the impediment to sell Bell Labs research and the Lions book, UNIX would never had been available for free to start with.
FSF's position is restrictive in the sense that it limits the choices you have. On non-mobile, while a lot of people agree with FSF's point of view, in practice they have to make exceptions.
(There's the urban legend that you're always breaking some law even when you try your best not to; probably you're also always running some opaque firmware blob even when you try your best not to).
I don't see mobile users making any compromise like this, unless a gigantic scandal happens.
It did't come to reality on the PC, but sneaked in through the backdoor with the advent of mobile devices.
I have little hope that this can be undone, but we need to be prepared to nip these tendencies in the bud for the next paradigm shift.