Hacker News Reader

There are only ~20 buildings of 100+ stories in the world. The tallest building in the Bay Area is the Salesforce Tower at 61 stories, and there are only ~50 buildings in SF that hit 400 feet, which is about 1/3 the height required to hit 100 stories. *All stats from wikipedia

So in theory they would solve the issue, it's just that your solution dwarfs the number of humanity's 100 story buildings by a factor of almost 50.

Yes, they are, but they're better than doing nothing, which is what has been happening for a while.

You don't need 100 story residential towers. Put in 3 or 4 floor rowhouses up against the sidewalk and there's more than enough room.

The issue is zoning regulations that make cheap enough and dense enough housing illegal.