There's a lot of people saying it's the corporations fault which isn't exactly untrue and they do have significant sway politically with lobbying.

But it's the people who keep bringing back politicians that clearly don't want to lower housing prices because a segment of a population is to heavily invested into it. If anything the current tax system clearly incentivize people to invest into housing, imagine if we treated water like housing and people would buy up then vote for anyone that'll make the prices go up.