It seems that Apple did financially compensate Xerox for both the visit and the ideas: "Fact: Apple obtained permission ahead of the Xerox PARC visit. In addit

It seems that Apple did financially compensate Xerox for both the visit and the ideas: "Fact: Apple obtained permission ahead of the Xerox PARC visit. In addition, Apple provided compensation in exchange for the various Xerox PARC ideas such as the GUI" http://obamapacman.com/2010/03/myth-copyright-theft-apple-stole-gui-from-xerox-parc-alto/ http://obamapacman.com/2010/03/myth-copyright-theft-apple-st...