i have respect for them being the first GUI driven OS
Xerox had the first GUI which was "borrowed".

The very first graphical user interface was developed by the Xerox Corporation at their Palo Alto Research Center (PARC) in the 1970s. Steve Jobs, visited PARC in 1979 (after buying Xerox stock) and was impressed and influenced by the "Alto", the first computer ever with a graphical user interface.
If you have not read about the Xerox Palo Alto labs you should. A herd of nerds sitting around on bean bag chairs building whatever struck their fancy. The first GUI, the first mouse, the first e-mail system, networked computers and even rudimentary voice recognition.

Xerox decided in their infinite wisdom that they were wasting their money and shut the research down. Bill Gates had also visited the parc and 'borrowed" a few ideas.