Cupertino isn't some random city; it's where Apple has been since the beginning. They contribute massively to the traffic around here, and they could easily afford to buy the empty Vallco site and build housing for their employees, who could then walk to the Spaceship. Only now are they even talking about building teacher housing there.
Cupertino lets them get away with it because of all that money they're paying. I always thought a Chicago Move would be for the city to go to Tim Cook and say, looking around appreciatively at the Spaceship,
"Nice building you have here, Tim. What was it, five billion? Very nice. Be a shame if we had to close it down for health inspections."