Put as "Is casino withdrawal safe?", the matter turns on how a balance is held. Money sitting in a casino account belongs to the player, and how safe it is depends on how the operator holds it. Some licences require player balances to be kept apart from company funds, others only ask for a statement of how they are protected. The difference matters most on the day a casino shuts down, goes bankrupt or loses its licence.
When a licence is suspended or revoked, the operator must usually stop taking bets at once, and accounts may be frozen while the authority decides what happens next. Authorities often require the company to return balances before it leaves the market, sometimes under supervision. News of a suspension reaches players late, so a casino that suddenly stalls withdrawals, changes its terms or stops answering support deserves a check against the register.
Some licensing authorities ask operators to declare a level of protection, from none through basic to high, and to show it to players before they deposit. A declaration of no protection is legal in those systems and simply means that balances would be lost in an insolvency. The statement is usually in the terms or near the cashier. Reading it takes a moment and says more about the safety of a deposit than any trust badge.
Casinos are sometimes sold, and accounts can be moved to a new operator with fresh terms; players are usually asked to accept the transfer or withdraw first. The terms of a transfer deserve the same reading as the original ones. Whatever the protection level, leaving a large balance in any casino account carries a risk that a bank account does not. Withdrawing winnings regularly, and keeping only what is needed for play, limits the damage if the operator ever fails.
A closing casino usually has to notify its players and the licensing authority, and emails announcing a closure deserve prompt action.
The operator usually must stop taking bets at once, accounts may be frozen, and authorities often require balances to be returned before the company leaves the market.
Customer balances held in a separate bank account or trust, away from operating funds, so they are not meant to reach other creditors if the company fails.
Players are usually asked to accept the transfer with fresh terms or to withdraw first, and the new terms deserve the same careful reading as the original ones.
Without segregation, player balances are simply company funds and rank alongside everything else the company owes, so they may never be recovered.