IMO, everyone who has left a steady job to found a company has taken an unnecessary risk.
Helping a stranger get promoted? At the risk of ending your career (a massive loss for most people)? With the only reward being feeling good for Doing The Right Thing (tm)? Not so much
That a risk is +EV does not make it a necessary risk.
How you reach that conclusion and seem to claim that to be an inevitable/logical chain of reasoning is literally beyond my understanding. I started this subthread with the claim that an interesting life is full of risks and that leaders must be willing to take risks that do not have any obvious selfish benefit.
For the record, I have not downvoted a single one of your posts. (You can't downvote posts that are in reply to one of your own anyway, but I haven't downvoted any others either.)