I think you're missing the point. The point is to spend just a few years building passive income through investments such that the dividends/distributions it t

I think you're missing the point. The point is to spend just a few years building passive income through investments such that the dividends/distributions it throws off are enough to cover your living expenses. At that point you're free to do whatever you want and you can work on your startup or ideas without having to worry about running out of money or fragmenting your time with consulting.