Doesn't surprise me, honestly. The USA has gotten a fairly bad reputation the past two years after Snowden revealed all that. Didn't they start using Russian made microprocessors? Makes sense that they start banning Windows 10. Companies like Microsoft are at the mercy of the American government, at least up to a certain extent. It's sad, but that's how it works.
Perhaps it's sad, but maybe it's the catalyst for change we need. Microsoft can lose a few individuals as customers and not blink an eye. Losing significant quantities of foreign governments as customers due to US government policies and actions may not go over so well with their bottom line.