SBF was a sociopath who would (acdg to sworn testimony of his GF) actually go ahead and toss the coin if the outcome was one side results in the world getting twice as good and the other side causes the world to be destroyed, and he DGAF that he was also making the bet for everyone on the planet.
They didn't count on the fact that this mentality would also mean that in real life, he would also do all kinds of risky crimes, and even go to trial instead of taking a plea deal, because there's a non-zero!! chance he could get away with it.
Bad bets all around