Earlier quoted context omitted.
Housing isn't the only aspect, by far. Our family healthcare insurance premium is double our mortgage, and it goes up more than inflation (and wage growth) every year.
Yeah health care is another problem but the cost disease here is not as deeply entrenched in the economy as housing. The whole real estate market and a giant chunk of the financial system runs on the idea that housing must always go up, which necessitates that it must become less affordable over time.
The same is true for healthcare. Pfizer needs to demonstrate ongoing growth to their shareholders; insurance companies are bound by the ACA to a maximum profit margin so can only increase profits by growing costs; half the new commercial real estate in my area is medical buildings going up.