[pacaro]

Or it could become the next Detroit when the tech industry decides that it doesn't "need" to be in the Bay Area.

I doubt that there'll be that dramatic a change because there are too many actors, Detroit was more vulnerable because it depended on such a small number of anchor employers

[bruceb]

Detroit is freezing cold during the winter and doesn't have the same scenery. Even if tech declined SF will be a hot destination.

[dredmorbius]

Detroit's early draw was its access to transportation and raw materials: iron ore, coal, the Great Lakes and St. Lawrence Seaway. For heavy manufacturing, these were all advantages.

San Francisco has appeal for weather, scenery, and an excellent harbor. Disadvantages include earthquake hazard, and an increasingly unreliable water supply. The latter isn't critical yet, but could well be.

[rayiner]

The car industry didn't move from Detroit. The work got automated away and growth got captured by foreign competitors. If that happened to finance, New York would suffer the same fate. But by the time robots can program themselves, all bets are off anyway.