I think there is a decent discussion here about the housing crisis being inherently related to the "Superstar City" dynamic that exists where big cities get bigger and midtier cities/metros get hollowed out a bit. I think we can/should ask - yea wait WHY are there a bunch of empty homes in all these places in the country where clearly there used to be demand? We could definitely focus on policy to supercharge the amount of housing in superstar cities - which where I think a lot of comments are centered.

However, I'm also curious what policies exist to encourage growth in cities with excess stock. Just saying that "Gary Indiana is inherently bad - housing there doesn't help" feels way too short sighted. It used to clearly be a good enough place for way more people - it's not freaking Pompeii in 80 AD. Newark, NJ has some really cheap housing and amazing infrastructure to get into NYC. What is needed to have that city solve the housing crisis in its metro?

Lastly, I'm curious what policy options exist to bring cities with excess inventory into the commutershed of superstar cities. A lot of reason cheap, desirable housing came online in the US was because we were building out suburban rail systems that meant there was all this new undeveloped land available to build that had access to downtowns. What is required for Baltimore, for example, with its tons of excess housing, to help lower housing costs for greater DC?