This is where Y Combinator could play an interesting role though. Could you imagine two or three San Francisco tech companies all uprooting at once to a brand new city, where costs might be half the cost in San Francisco? And at the same time, maybe you could convince a couple other big tech companies to open satellite offices in the new city. To get more economic diversity, perhaps the startup-city could also buy up established, small-scale manufactures and move them to the city. Still -- these kind of moves would be very, very hard, as it would be very difficult and risky to try to uproot enough employees to actually make the move successful.
Any other ideas for how the economy could be bootstrapped?