This assumes there is an untapped supply of developers across the nation and that all a company has to do is look outside of the traditional tech hubs, but that is not the case. The tech hubs grew in a self-fulfilling cycle, attracting nearly the entire supply of competent developers.

Now that supply is spreading across the country because remote work is easier, but that doesn't change the number of developers that these companies are competing for. I doubt that the supply/demand curves will move much at all.