[emeerson]

Other than intuitive observation of the creative class economy, this article offers neither a definition of "dominant, enduring social structures" nor evidence outside of GDP as a metric. So far it's like "duh GDP in this day and age is a product of high-density geographic regions." Am I missing something here?

[ianai]

Perhaps the bit about companies setting up near an airport. Thus they ensure global access and think of their "home city" as mostly yet another venue. That, I think, someone serves as an insular force for the present "big" localities - localities large enough to have an international airport.