[astrange]

You can't pay the mortgage on a place you're not renting out though, so they mostly can't withhold supply.

It applies more to things like retired people living by themselves in a 3 bedroom house.

[eru]

OK.

Though if they can't withhold supply, how are those cartels supposed to hold up prices, then?

[astrange]

They don't, it's not real.

(Except that they can prevent construction of new units through zoning.)