I just want to let you know, I showed your posts and conversation pages to my roommate, a computer science undergraduate student, and his first response was to hold his head in pain, then just start laughing for several minutes.
And while obviously it cannot be proved otherwise gates would be broke, it is commonly believed that gates stole the GUI from MAC, along with elements of XENIX and several other things to create windows. DOS was a low level OS without a descent GUI.