In all seriousness, why would that be the case? I assume you mean that you should start a startup if you believe that you can outperform the median, although presumably all (or most) founders believe that of themselves. I guess gambling based on your confidence in your ability is preferable to gambling on something else with poor performance at the median, like the lottery.
No, he would say you should start a startup because you want to start one. Your reading of it as "I should only start a startup if I think I am above median" is probably even more risk averse than he would advise, since he thinks many more people can start companies than do.
I should have been more explicit, and said "I should only start a startup if I think I am above median if my goal is to build a company that makes a net gain."
