While Xerox invented the GUI, they considered it a worthless concept and would have thrown it away, though they invited Jobs, Gates and others to view it. Gates turned them down, Jobs not only accepted, but paid to spend time with the team that created it--Apple subsequently took a trash idea and turned it into something people wanted. Gates had to copy it one way or another and get it into the enterprise or lose relevance in the market.
Unix--or rather Bell Labs--contributed to the OS environment, but again it was an enterprise-only OS until Jobs created his NeXt OS--about the same time Linux Torvald created Linux. Because Jobs and the Apple R&D managed to make Unix easy for anyone to use by putting a GUI on top of it, OS X now holds somewhere between 15-20% of the established OS base in the US depending on the reports you read and about 8% world wide; Linux holds about 2% not counting Android, which has brought Linux much farther into the public eye by -- again -- making it easy to use, not a hobbyist's toy.
So I have to disagree. While others were the inventors, Jobs and Gates were the movers. It's as simple as that.
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