If you are a buyer/holder, and use debt, you can be the king with both real estate and stocks. You can buy as much debt as you can at a relatively high interest after a crash, and you’d make bank.
Buy hold, in most markets is a good strategy. We have nimbys that prevent new construction, limited real estate around business centers and so on.
For stock market, the GDP grows, so does the market. Buy ETF, constantly, and you’ll still be ahead big time. You don’t have to be 100M$ rich, being 20M$ rich is sufficient for most people.