I think due to perverse incentives it causes the exact opposite to happen. Why did the Windows calculator need to be remade with a much slower and less responsive version? Telemetry probably showed the calculator was frequently used, so a Project Manager targeted it for "improvement" and it was then ruined.
There was Windows 3.2 in 1994 (not to be confused with "Win32", despite the name of the HTML file): http://toastytech.com/guis/win32.html
Yes the western versions of Windows at the time didn't include support for Chinese (etc.) language. But there is really no reason why they should - if the user's language can be represented in an 8 bit codepage, why should they have to pay any price in performance for something they will never use?
Conversely, would a Chinese-speaking user prefer an operating system designed to support all the other languages that exist, with an implementation that is likely not as specifically tailored to their requirements?