Jeff Skilling (Enron) served 12 years in jail for insider trading and securities.
Not saying that Skilling, Maddoff or SBF shouldn't have gone to jail. They deserved it. But I do find it interesting that financial crimes can tend to be the most harshly judged, likely because of who they impact (the people with money) and because they cause distrust of the financial system as a whole.
> Madoff stole $20-35B
Not to defend Madoff, but it's not like he made off with that money himself, so I'm not sure "stole" is the correct term. Most of that money went to investors -- it just went to a different set of investors than the ones who had put that money in (the nature of a Ponzi scheme).