Xerox Parc

Something that I have always wondered about is why Xerox never sued Jobs ass off for the Mac GUI and also MSWindows which was derrived from Xerox's 'Small-Talk". They were a major corporation and Apple was quick enough to disembowel DRI's GEM altho Sam's Atari ST still continued to use an updated version of the original. MS has also litigated any threat to their bullying dominance and despite the protestations of the C-64 fans GEOS (any coincidence there) is obviously a clone of the GEM desktop. The mouse was also developed at Palo Alto. I have trouble simply accepting that a major corporation like XEROX was simply a stupid wimp. From all evidence I've seen Xerox invented the GUI. Something more important than CP/M, MSDOS, or UNIX. What am I missing here. Lawrence lgwalker(a)mts.net bigwalk_ca(a)yahoo.com