NYC has a net negative out-migration rate. If it wasn't for foreigners moving in the city would be shrinking. And foreigners (like many of my family in Queens) don't move to NYC because they like a city that's just one step up from Bangladesh. They do it because of the access to jobs, people who speak their native language, etc. They tend to move to Long Island (or, these, days, Texas) as soon as they get their feet under them.

My larger point is that public policy is a meta-market. We subsidize the suburbs because the majority of people like the suburbs. The net migration patterns in this country are to places like Dallas and Atlanta because that's where more people want to live.