Madoff's system was only a Ponzi; there were no investments; all new clients' money was used to finance returns and withdrawals of previous clients.
SBF's system was to use clients' money to do illiquid investments. Was it fraud? YES, because he lied to his clients and said he didn't invest their money. And that's why he was tried and punished. But was it the same kind of fraud as Madoff? NO.
In law, intent is everything. If you kill someone by accident, or in self-defense, or after planning their murder for years, the law will treat that very differently; yet in all cases the result is the same (the person is dead).
Same with fraud. It's not the same if it's a pure fraud where there is no possibility that the victims will ever see their money back, or if it's a fraud where it's possible they will be made whole, even if that possibility only exists in the mind of the perpetrator, because the mind of the perpetrator is what the legal system is interested in.
SBF's system was to use clients' money to do illiquid investments. Was it fraud? YES, because he lied to his clients and said he didn't invest their money. And that's why he was tried and punished. But was it the same kind of fraud as Madoff? NO.
In law, intent is everything. If you kill someone by accident, or in self-defense, or after planning their murder for years, the law will treat that very differently; yet in all cases the result is the same (the person is dead).
Same with fraud. It's not the same if it's a pure fraud where there is no possibility that the victims will ever see their money back, or if it's a fraud where it's possible they will be made whole, even if that possibility only exists in the mind of the perpetrator, because the mind of the perpetrator is what the legal system is interested in.