The Sunset, Richmond district etc are just miles and miles of low rise apartments and single family homes. Imagine building 40 story towers in those neighborhoods.
People see FIDI and think that level of density is happening in Pac Heights or Sunset and don't realize how thin things get once you get out of the main downtown strip.
Californian cities would look like south american cities like sao paolo or medellin today if they actually built for demand from job growth.