How in the world did SBF decide that gambling was the best course of action for recovering the funds? It seems to me that he has terrible friends around him. Have you ever thought of gambling as way to recover your funds and pay your debts? Does this look like a case of compulsive gambling?
There are much better ways to repay your loan than gambling. It is only a naive person that chooses to gamble. SBF needs good people around him that will tell him the truth and not just what he wants to hear. Wishing gambling shops can run some sort of assessment that would prevent those who owe money from gambling, this would save the individuals from doom.