This is a statement about life in general. MOST everything returns to it's original look and feel but with a pragmatic improvements.
If you are over 40 years old then you will most likely agree with me that Windows XP was a great operating system. It took time to hone XP (3 service packs) and that was and is necessary to keep technology secure and compatible.
XP had so many great features, even randomly moving files around in a folder to your own grouping choices. I could go on and on.
Windows 7 is excellent! Windows 8/8.1 failed! Will Windows 9, 10, 11 etc. keep the almost tangible Start Button/All Programs Menu? YES, I do believe Microsoft will keep their branded UI for all levels of user experience and for all business and corporate use.
How much have cars changed in the last 100 years? Other than safety features, comfort and accessories their is one steering wheel, four wheels and a hydraulic or manual transmission. Microsoft will come to understand that Windows XP (the flagship) and was/is tantamount to the evolution of motor cars. Users experienced this evolution with Windows 7 but when W8/8.1 was released (I call this the Jetsons experiment) R&D failed miserably by not following the evolutionary pattern of all things that become a part of our daily lives.
Retro Windows will be the most profitable move for Microsoft and will continue to please the masses from the modest PC owner in his/her own residence to the corporations that buy thousands of PC/s and many servers as we move into the future.
K.I.S.S. Always has been the best idiom and always will be the idiom.