What the mayor actually said about Palo Alto:

  - "It's become a monoculture," Burt says.
  - the city's role as a tech incubator is in danger.
  - Large employers like Palantir Technologies, the secretive private software firm, and Amazon, have taken over

He wants to force tech companies to move out when they get too big. It's hard for startups to get office space when large corporations can easily out-bid them.