The lesson to be learned is that it’s less risky, not more, to understand that some ideas don’t work out and to have ways to identify failures quickly.
I wonder if, societally, it's true though, or if statistically the more reliable way to "succeed" in life, is getting good at selling and defending ideas, even the bad ones.
Yeah if your families income etc depends on it yeah its hard to take that many risks. Not everybody has enough wealth to prosper from the passive income such wealth could create.