For mobile phones that works as a daily driver? Gobbling up iOS. Or gobbling up what's becoming of Android.

I really wish we had open phones that "just work". I'd even go with slightly quirky but functional. Unfortunately, that requires strong cooperation between hardware maker and software developers; and it will require a lot of work. But that's not the main issue. The direction we're headed toward is "everything need an official app", and those will mostly only work on "official" phones made by big manufacturers.

Even today, making some bank apps work on non vanilla Android is not always straightforward, and it's still relatively open and easy to do. The move by Google is going to tighten this even more, and I have no doubt, if they pull through, that this will go in the requirements for the "play protect" validation BS. Meaning if you want that bank app, or whatever state digital ID app (meh) to work, you'll need a "real" Android or an iOS device. And those apps are becoming more and more mandatory (I can't log-in to my bank's online website without their app and proprietary 2FA…).

A niche, open-source OS, Linux or modified AOSP or whatever, will have a hard time filling that gap as things keep moving. Which is really sad.