Orwellian doublespeak of an Exchange that goes broke when everyone uses it like an Exchange instead of a Broker or Bank? Perhaps there's a commodities market o

Orwellian doublespeak of an Exchange that goes broke when everyone uses it like an Exchange instead of a Broker or Bank? Perhaps there's a commodities market or something that requires traders to pump assets into accounts that sit on the exchange itself and would somehow have direct fluidity problems if they stopped, but it seems like the wrong term to me.