And besides, a company, whether it be a gambling casino or exchange or whatever, should never depend on users deposits, as a means for them to be liquid, so as to be able to pay settle withdrawals peacefully, else, such platform could be running a ponzi scheme.
Gambling casinos is a centralized platform, so it is not really ideal to store your funds right there if you are an active gambler better to transfer those assets into your own wallet and just keep a small amount in the casino this will serve as your starting point again if the platform gets down you don't need to worry too much because you know on yourself that is just a small portion for your gambling entertainment and not as your whole asset right there.