Working in one place for life is very economically inefficient for any intellectual work. Eventually there will be a company that would get more value out of yo

Working in one place for life is very economically inefficient for any intellectual work. Eventually there will be a company that would get more value out of you, and therefore is willing to pay you more, but you won't be able to take the job. Clusters of companies already exist. One is Manhattan where finance jobs are concentrated, another (like you say) is Silicon Valley where tech jobs are concentrated. In both, the workers choose to live across a vast area.