I read that as more broad - housing as investment; flippers buying properties to upgrade (materially or not) and sell at a premium, removing bottom rungs on hou

I read that as more broad - housing as investment; flippers buying properties to upgrade (materially or not) and sell at a premium, removing bottom rungs on housing ladder. i.e. the mindset is an accelerant or maybe even the cause (think back to the roots of restrictive zoning, fear of property devaluation)