I mention this because I keep running into people who have never heard it, but the &quot;infamous&quot; 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 &quot;GUI&quot; 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.)<p>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&#x27;s or Facebooks were. (Though of course coming much later those were bigger in absolute terms.)