Buying a house with an HOA to keep the property values up, setting up NUMBY committees to keep new developments out, google buses as someone mentioned, corporate recruiting pipelines that pull from a handful of select schools, etc.
Same general idea as the Old-Money Boston-Brahmin or NYC types, just with better marketing.
It’s just to say that wealthy people use their money to create greater distance between themselves and people with less. Re-enforcing the “them” mentality and stigma. Rather than truly integrating into the San Francisco, they’ve planted themselves and created a moat. Google buses would be an example of how a company can add to that. They should have improved public transportation.