Isn't part of the bimodality here just a "Silicon Valley Effect", where a few companies in a few very expensive areas compete for talent that has to pay ever more for housing?
If one factors out the major tech hubs and only look at e.g. any random city, is the bimodality there too?
If one factors out the major tech hubs and only look at e.g. any random city, is the bimodality there too?