Ferris likely made a lot more money from his book than from his "dietary supplement" business he is very vague about -- in the same way the "Rich Dad, Poor Dad" author skims over his own business results and sells a lot of books.

They are both easy sells -- not working much and generating tons of money -- but I would like to see examples of businesses that do this in the real world.* I work 60+ hours a week on my app (work I enjoy). I am convinced it is impossible to outsource and not put in the hours without competitors eating your lunch.

*plentyoffish being the only example I can think of.