Re: The OS designers to some extent
Really till DOS 2.11 or DOS 3.3, one designer, Gary Kiddall in approx 1974. He offered the idea of a personal desktop computer based on 8080 to DEC when Intel (where he worked) wasn't interested. They weren't either, so he founded Digital Research. He was never going to be a Steve Jobs or Bill Gates, because they were good at business and using other people's ideas, so ultimately DR faded away despite CP/M 86 on PC, DR-DOS, GEM GUI and later CP/M 80 reborn on the Amstrad PCW series.