You plead guilty precisely because you didn't do anything. The probability distribution for you was: high chance of getting off, low chance of getting a large punishment. The probability distribution for SBF if he pleads not guilty will be inverted: high chance of incarceration, low chance of walking. But the odds will likely be preferable to whatever deal he ends up being offered. Modelling the cops that booked you, their goal is to throw things at the wall and see what sticks. Whichever cops are currently gathering evidence against SBF will be thinking the opposite: they need to be very careful in collecting evidence to minize the risk of SBF getting away.
I should point out that while this is unfortunate, this is all a relatively inevitable consequence of having a justice system. Since humans are deciding cases, there will always be a small chance that they screw it up (in one direction or another). You can't have arbitrary do-overs for people who feel their case was decided poorly, because everyone thinks that (or will say they do).
I should point out that while this is unfortunate, this is all a relatively inevitable consequence of having a justice system. Since humans are deciding cases, there will always be a small chance that they screw it up (in one direction or another). You can't have arbitrary do-overs for people who feel their case was decided poorly, because everyone thinks that (or will say they do).