As a practical matter, meaningful change to the population density distribution will take decades, if not centuries. And it will not happen at all until we can

As a practical matter, meaningful change to the population density distribution will take decades, if not centuries. And it will not happen at all until we can find a way to make urban living less brutally expensive. And yeah, urban core will need to be redefined. Not everyone wants to live in a skyscraper. We need to strike a balance.