At some point we should wonder what other strategies Silicon Valley has. The fact that coders are encouraged to work remotely is attractive to sustain these areas of the USA, but it hampers the formation of centres of specialisation and exchange with other fields: either these graduates stay and work remotely, disconnected from both local industry[1] and the tech hubs, or they move away and worsen the unemployment problem they were supposed to combat.
[1] Not to mention that coding websites and apps doesn't exactly make you an integral part of the economic tissue of Hueysville, KY, as opposed to the much-maligned coal jobs.