I mean sure, that counts as a limit, as it is something that limits the housing being built. We can probably learn a lot from asking why it's not profitable to

I mean sure, that counts as a limit, as it is something that limits the housing being built. We can probably learn a lot from asking why it's not profitable to build certain kinds of housing. That said, the US is not building zero housing, so some kinds of housing _are_ potentially profitable to build.