I did manage to avoid being Microsoft employee #12 or so (my buddy Bob Greenberg was #8, I think?, and encouraged me to come join them), and Adobe employee #8 (I knew Chuck Geschke from some earlier work done as an undergrad extending his PhD thesis to Harvard's extensible language ECL), due to various life circumstances. I guess God didn't want be to be a spoiled rotten billionaire.
Another near miss was co-consulting with Len Bosack at HP setting up Lisp Machine networking, and wondering how the heck the then-nascent Cisco was ever going to sell more than a few hundred routers (based on the same Sun-1 boards developed by Andy Bechtolstein at Standford that we used at Imagen, the first typeset-quality laser printers, a spinoff from Don Knuth's research at Stanford) to universities and government labs.
As Gates said, those of us who grew up with the ARPAnet and came to take it as a simple fact of life like electricity didn't see the Internet juggernaut coming.