I mention this because I keep running into people who have never heard it, but the "infamous" Apple visit to Xerox resulted in a licensing agreement where Xerox

I mention this because I keep running into people who have never heard it, but the "infamous" Apple visit to Xerox resulted in a licensing agreement where Xerox was paid in pre-IPO stock for a license to use the elements that they had developed. (Xerox had not developed a "GUI" but had certain elements. AS this article documents, there were 6 years of work that led to the first GUI in the Lisa, though of course some of the innovations were licensed from Xerox most of it was not.) By the way- When Apple did go public, it was a massive event, and big news. It was the biggest, most successful IPO of all time. It was bigger, for its day, than Google's or Facebooks were. (Though of course coming much later those were bigger in absolute terms.)