It’s not that simple because the housing that gets built in areas with the worse affordability crises is high-end stock that gets bought up as an investment or

It’s not that simple because the housing that gets built in areas with the worse affordability crises is high-end stock that gets bought up as an investment or cash store. “The market” has decided that in an era of extreme inequality and stagnant wages that the only way to recoup investment is targeting this segment, leaving everyone else in dire straits. (Unless you’re talking about the government building massive amounts of social housing to account for the market failure, in which case I agree).