It is not hard to imaging a better system than windows.
However, this is not open source, so no one knows what is in it. It seems unlikely governments will allow it to run their systems.
My understanding is in Germany, government systems use Linex variants, because they can know what is in the system, prevent backdoors, and have greater security. As I understand it they do not use windows.
We are likely moving to several independent systems where each government trusts the system it uses.
OS/2 is way better than Windows.
Only thing is the executive poltroons in IBM's PC divisions didn't have the courage to market and stand by their product. Bill Gates scared the sh1t out of them.
I've been using OS/2 since the 1990's with no problems whatsoever.
It's been adopted by a European company and is now called Arca Noae.