[epistasis]

> packed in like sardines the way modern high-rise buildings do.

> but it's not as profitable so developers don't.

Developers can only build what is legal, and the size and allowed uses are dictated almost entirely by planners. And in places with discretionary approval, other power brokers like landowners and non-profits that turn out the vote for city council members get to make most of the decisions about what is built.

It's a fallacy to think that the only thing that could be built are homes for sardines.

[sidlls]

You and I are in agreement, if you'll (re-?)read my comment you'll see that.