Sure, but at some point real dollars enter the financial equation, backed by these coins, none of which are probably priced correctly to serve as collateral.
The ftt coin is shady as hell though. A 40% trading rebate for holding $1m is insane; that's nothing. And it's not open to anybody touching the US - a blatant attempt to prevent US regulations, which would catch this stuff.
It's very weird for exchange owners to get rich overnight. That doesn't happen in real markets, and it seems to only happen in crypto when the exchange is using customer deposits as leverage (Celsius) or trading on their own account, which means against their customers (binance, probably ftx)