Surveyor, real estate investing is a full time job and perhaps that’s what you’re doing. Just like any industry there’re some people who are good at what they do and can make money during ups and downs.
However, most homeowners will never see the 20-30% return you’re talking about. Historically, RE increases at the rate of inflation, including increases in square footage or better construction for the typical house. Like Robert Shiller said, if RE increased at 10% per year, the majority of us would not be able to afford a house. Look at houses in 1900 and compound that annually 10% and see what you get today! Look at $1000 invested in the Dow in 1900 and see what you have today.
The myth is that everyone can participate in real estate investing. But it’s a job for professionals.