The idea that only rich people have something to lose is a) ridiculously classist, and b) not applicable here: SBF supposedly doesn't have any money to lose, so by your logic we should be controlling him with violence.
SBF, regardless of the truth of his claim that he only has $100k in a particular bank account, almost certainly has anywhere from some to quite a lot of wealth to lose [0] (whether any of it is likely to remain after fines, forfeitures, etc. in the current criminal case is another story.)
[0] e.g., there is currently a legal dispute between SBF, FTX, and others over who owns a $400+ million stake in Robinhood.
Wealth isn’t just personal property in your own name or under your exclusive control. It’s almost always social, tied up in families, relationships, credit lines, trusts, companies, etc. And part of its power over you is your responsibilities toward and relationships with the others in its circle. You don’t want to be the guy who vaporizes your kid’s college fund. Or in SBF’s case, your parents’ house. Even if you technically have access to them when push comes to shove. (Maybe you think he would! But he found someone to place a very high stakes bet that he won’t).
It’s true that your access to resources in a pinch is not always aligned with cultural or consumption-based class markers. For example the family in Winter’s Bone clearly reads as poor, even though Jessup’s bond is paid-off house and acres of timber forest. Conversely, you could imagine a financier whose relationships are all burned and whose assets are all wiped out. But having something to lose is still going to be correlated with class on balance.
> But having something to lose is still going to be correlated with class on balance.
I look forward to seeing your data on that, but knowing plenty of both rich and poor people, I'm not going to assume it's correct. A lot of the poorest people I know are the ones richest in social ties. And vice versa, at least if we're counting the sort of meaningful ties that would make one more likely to stay in one place while the machinery of justice works.