The genesis of all windows systems came from the Xerox 8010 Star and 6085 computer systems. Xerox PARC scientists invented the mouse, networked storage, networked printing, email and the method used to map virtually every language to a computer keyboard.
The reason most people don't know about this is that Xerox management were idiots and gave a sneak peak to Steve Jobs and his Mac engineering team. They were rightfully blown away, because nobody had ever seen something as elegant and workable as the Xerox desktop.
I was fortunate to work for Xerox Parc during the early 1980's. Today, I use a Mac.
Idiots? They were very well compensated, and agreed beforehand.