For the crime that SBF is alleged to have committed, we can reasonably expect 20 yrs (he will be out in 10-12). But if he had committed a murder, he would be in prison for life (no parole).
Mathematically speaking, this implies that a life is worth more than fraud worth 8 billion dollars. We can make a very reasonable assumption that the govt can save 1 additional life using a million dollars (giving necessary treatment to drug addicts / suicidal people / etc). Out of the 8 billion dollars from SBF, government would have got at least 50 million dollars from taxes (this is a lower bound). Out of that 50 million, maybe the govt puts 10-20 million back for public good. So the govt could have saved at least 10-20 people from the money that SBF is alleged to have defrauded.
Based on the above, can we say that SBF indirectly killed 10-20 people? What would be the punishment for someone who kills 10-20 people? Surely more than 20 years.
This balance between the scale of crime and the severity of punishment can be very interesting. Should someone defrauding 2 billion dollars suffer twice the punishment of someone defrauding 1 billion dollars? What about 2 murders to 1 murder? What about numbers on scale that can change an economy (what SBF did)?
More fundamentally, is our legal system scalable?