Switzerland and Russia are even considering banning Windows 10 for governmental authorities.
You got a source for that? I have not yet seen any article making specifically that claim. All I've read are that some European nations (including Switzerland) are investigating whether W10 conforms to their (often stricter) digital privacy laws, which is really just business as usual. The only difference is that W10, as an OS that integrates many cloud based services, gives these agencies a lot more ground to cover. I've seen lists of everything being investigated and all of it is directly traceable to a viable service ("voice data" for Cortana on W10, "caller metadata" to sync contacts and call history between devices using Skype, etc etc). Even if one of these countries were to find violations, there is no way that would result in a ban. Your claims sound dubious to me.
As always, the real question is
not whether data is exchanged (exchanging data is technically required for any online service, including e-mail that people have been fine with for over a decade), but whom that data legally belongs to after being exchanged and what MS are legally allowed to do with it. Most of the boulevard tech press articles I've seen don't have staff capable of understanding those nuances, nor do they care, as their performance is measure by clicks rather than by truth or technical competence.
If MS is legally allowed to use that data for monetization purposes, and they are creating behavioral profiles like Google is, even for enterprise Windows users, then they do have a vary unfortunate issue on their hands. It would be hard to believe they stepped into that though. So far I've not read that. There is a lot of click-bait trash going around, and it's unfortunate that a lot of people will fall for this, but that's the world we live in today.