Comment by Vecr

How SBF is described as acting in this case as absolutely not rational if he was actually trying to maximize his expected number of dollars, there's going to be an optimal set of trades you can make with the finite number of dollars you start out with, and it's not going to be slamming your head against a single bet that's getting less and less attractive as you get deeper into the conditional probabilities. Make a single "good" bet (like SBF claimed to have done here) if you want, but use the rest of the money for less correlated bets that at least aren't strictly conditional on the first bet going well to have any utility at all.