Yet those returns (10x-20x) are lower than having invested the purchase price in the S&P500 (with dividends re-invested), which returned a 21x to 30x total return over that same time period (depending on which exact spot you chose to be the "70s")
https://dqydj.com/sp-500-return-calculator/
The house also provided a place to live, so you need to goose the house effective returns a bit there, but that place to live also came with overt property taxes, maintenance expenses, etc.