I see this going one of two ways. Either tech decentralizes and spreads out into places like Atlanta, Austin, and Nashville, or these jobs continue to further

I see this going one of two ways. Either tech decentralizes and spreads out into places like Atlanta, Austin, and Nashville, or these jobs continue to further concentrate in SF/NYC/Seattle and the other cities fall way behind. In the first case, I think it's likely that inequality will continue to increase across the U.S. and the median American will be worse off for it; i.e., there will be a positive feedback loop where winner cities take all. In the second case, I think inequality will decrease, and the tech industry (and similar "big city" industries) can play to each region’s cultural strengths. I think this inter-city competition would be a positive effect and lead to accelerating innovation across a variety of different fields. Judging by recent Amazon/Google news though, I fear the first case is more likely to happen.