> “Google has such great facilities—Twitter has two or three cafes and so no one goes to spend money in mid-Market,” he said, referring to a section of downtown

> “Google has such great facilities—Twitter has two or three cafes and so no one goes to spend money in mid-Market,” he said, referring to a section of downtown San Francisco where Twitter is based. > Similarly, many large Silicon Valley companies have in-house catering, daycare, and other amenities that make offices little self-contained communities that hardly require interaction with surrounding neighborhoods. > “Do we need to open up an office and have six cafes?" Obviously easier to do in the middle of San Francisco, than in zoning-nightmare Mountain View: Imagine 10k+ people trying to have lunch in the one and only pub around.