Google's Android is the largest OS by usage.
But yes, you're right. When you try to use a non-US OS in France you end up buying US hardware and erasing your data on the next LineageOS release.
We need vendors.
I am primarily thinking about government institutions and corporations. There Microsoft is used almost everywhere.
Mobile phones are a secondary issue in my opinion, also because Android is already much more open than Windows.
See opendesk.eu , it's a platform collaborating with many EU open-source developers, and it's funded primarily by the German government.
Google's Android is the largest OS by usage.
But yes, you're right. When you try to use a non-US OS in France you end up buying US hardware and erasing your data on the next LineageOS release.
We need vendors.