If rents always went down there'd be no incentive to build and own supply. I think the thought experiment here is that though this is a seemingly simple supply

If rents always went down there'd be no incentive to build and own supply. I think the thought experiment here is that though this is a seemingly simple supply and demand problem on the surface its also exceedingly complicated to actually plan and adjust for due to all the related inputs to housing (schools, water, fire, political representation, etc.)