China can unite with Taiwan tomorrow if they want to peacefully.
It's been done before. Look how East and West Germany did it. Overnight.
All China has to do is be East Germany and let Taiwan be West Germany and it will be sorted. But obviously they don't want that because being one country isn't their main goal.
If it ain't broke don't fix it. Windows 10 isn't even close to end of support.
If enterprise users haven't moved over then individual users don't need to.
I will move over before support finishes but make no mistake that'll be because I'm forced to due to security reasons and not because I want to.
My windows 10 enterprise has been running flawlessly.