I don't know why you would assume that Microsoft uses their ill-gotten user information to make their UX better and Google to make theirs worse. Is it just because Microsoft's products' UX cannot be made any worse?
I know right. I don't get it. I would expect a company like Microsoft that makes most of their money selling to businesses would take privacy and security more seriously.
Compared to google which continues to make their UI more hostile to users with each iteration.