> Maybe a couple decided to buy a second home or a duplex instead of investing in the S&P500.

Just want to address this particular point. That’s the problem. People want to use houses as an investment vehicle rather than a place to actually to live in. You want a buy a second, third , or even fourth house fine. But what should not happen is others are unable to live in the same city because people wanted to make more money from a fundamental need.