Probably this is the reason: > In 1979, Steve Jobs arranged a visit to Xerox PARC, in which Apple Computer personnel would receive a demonstration of the techn

Probably this is the reason: > In 1979, Steve Jobs arranged a visit to Xerox PARC, in which Apple Computer personnel would receive a demonstration of the technology from Xerox in exchange for Xerox being able to purchase stock options in Apple. After two visits to see the Alto, Apple engineers used the concepts to introduce the Apple Lisa and Macintosh systems. https://en.wikipedia.org/wiki/Xerox_Alto https://en.wikipedia.org/wiki/Xerox_Alto