>I think part of the problem is people are framing this discussion as if the whole US is silicon valley with extremely limited land when it's not.

I think a large part of the problem is that states and to a lesser degree the feds are trying to compensate for problems created by places like SV (not that every state doesn't have comparable places doing similar) so they write rules that incentivize X or Y and so you wind up with weird "a bunch of duplex townhouses on .2ac" developments in the middle of nowhere and other places they don't make sense because developers are naturally pairing the incentivized types of construction with the cheapest suitable land.