This would just permanently entrench existing wealth structures. Gated communities will be celebrating at what you suggested. It would be the end of economic mobility. Great for the long tail, not so great for those left of the power law.
Economic mobility is enabled by jobs and education, not location. Speaking as someone who grew up in a small town and ended up making 10x my parents combined, a small town upbringing is not a hinderance if you’re inspired by learning about the world through the Internet.
If the remote working and education trend continues, location will be more or less irrelevant.
If "we only hire in our NY or SV head office" tends towards "we hire anywhere, as long as you're good enough" - wouldn't the effect be the opposite?
We've been seeing the slow death of rural communities for decades so the status quo doesn't seem to be of much help to them. Some reverse migration back into these communities and a trend away from increasing centralization into a few rich cities should only help their economic prospects.
