> Eventually Silicon Valley will end up like Detroit, with abandoned 4-over-1 condo complexes and empty office parks where the software industry once stood.

What if the secular demand for living in Silicon Valley is higher than Detroit? What if Detroit was desirable due to the economics and infrastructure constraints of that time, but what if people like the other aspects, such as location and weather,of living somewhere?

Not that it’s not possible for that to change either, but my point is different pieces of land may be more or less desirable than others outside of economic conditions.