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I wasn't only referring to wanting to live where there are a lot of people. I was also referring to wanting to live near to very similar/nice people and far from very dissimilar/annoying people. I think the latter, together with the expected ability to scale things down, would make people want to live in smaller, more selected, communities. Even if they were in the middle of nowhere.
People basically want to live where they can find a well-paying job.
In the great leap forward Mao thought that the factories being in cities was simple a coordination problem. He then declared to move them outside of the cities where they were grown organically. It was a disaster.
A big company like Google could theoretically move it's business headquarters to the middle of nowhere. On the other hand that would likely be a very bad business decision. It's employees wouldn't simply want to move to the middle of nowhere.