Not for everyone, but if you live in Finland you can (most likely) access National E-library. Unfortunately it’s only for IOS or Android, no e-readers are currently supported.

They are excactly what the name implies. Testing is generally pretty good, but it’s still testing. And unstable is also what the name implies. People, myself included back in the day, run both as daily drivers, but if you want rock stable distribution installing unstable revision might not be the best choise.

Debian. I’ve had installations which went trough several major version upgrades, I’ve worked with ‘set and forget’ setups where someone originally installed Debian and I get my hands on it 3-5 years later to upgrade it and it just works. Sure, it might not be as fancy as some alternatives and some things may need manual tweaking here and there, but the thing just works and even on rare occasion something breaks you’ll still have options to fix it assuming you’re comfortable with plain old terminal.

Sure. But the American company is currently managing development, have their own money on the table to improve the code and so on. Depends on how pedantic you want to go on this.

Even Torvalds himself, while originating from Finland, is currently a USA citizen and Linux foundation is paying his salary. With FOSS the borders are a bit different than in the real world and if you want to really be strict about it, fully European operating system just does not exist, at least not viable and well supported one.

Personally I’ll keep using whatever free software there is, regardless of the country of origin.

Originally from France. Current owner is 8x8, American company, but the software itself is open source. So yes and no, maybe?