Good news - experimental verification of the law of supply and demand! I'm sure the analysis is welcome though and I hope policy makers try to learn from this. We could densify most american cities quite a lot more.
We could but it’s not always just “good” to make things dense. My hometown has had a huge push to add more housing to make things more affordable. What happened? Rents went down for a couple years then right back up. Except now the city has a bunch of more soulless condos and is horribly congested. Sometimes preserving things and keeping them nice and simple even if it’s costs a bit of a premium is better.
So there were a bunch of people who wanted to live there and now can.