alt Hacker News> The "supply constraint" is that the landowners don’t want to change zoning laws
The only ones who are acting in their own interest are the ones who own land that already contains a tall building and who either don't live in the area or are so rich they aren't affected by local cost of living, and they're quite outnumbered by everyone else.
> If your logic held, it should be the homeowners pushing for density.
It's possible and even common for people to be misinformed about the effects of a policy and then vote against their own interests.
So let's say for a moment that you're right and such a policy would be beneficial to the landowners.
I'm sure you'll appreciate that it's a great concession — after all, it assumes that they don't have non-financial motivations (like living in a non-crowded area, or preferring the burbs), and that the economics of building high will work out (individual flats will be multiple times more affordable than the current houses, but the land will be more expensive than it is now). There won't be traffic issues because of more people commuting from the same area. The quality of life will stay the same. This frees you from having to argue against all homeowners in the country and labeling them as irrational.
It still doesn't matter if they're wrong or right. They have the power, and given the environment they're in, this is what they'll decide. The government can't do anything here to relax the laws.