Earlier quoted context omitted.
They aren't brokerages, they're banks pretending to be exchanges. They do fractional reserve banking with user deposits.
Fractional reserve in the context of banking is completely different because the FDIC backstops runs and the Fed backstops the FDIC. Nobody backstops FTX or any other crypto exchange so its better described here as 'the yolo lifestyle'. A modern day bank run in traditional finance is functionally impossible* (up to the FDIC insurance limits, and often higher in practice - there were no imposed limits at WaMu for inst…
Not at all. Bank runs still happen, the backstops just soften the blow with liquidity injections. Every time you see a withdrawal limit, there is no doubt a bank run is occurring.