Back in the 50s to 70 we teeated hoises more like food. No one bought up all tge bread at a grocery store in hopes of selling letter at a high profit. During this time houses inflated mostly along side wages.

The the dark times came. The risr of the secondary real estate market ment people couldcquickly trade mortgages* like stock. This decoupled house prices from wages and turn te whole 2nd market into a new stock market

*technically they are not mortgages but mortgage back securities