Primarily, minimum withdrawal limits are there to protect the casino. Without any restrictions, there is a risk that a player will play hard, win big, and disappear – never to be seen again. Casinos rely on repeat business and loyalty and implementing a minimum withdrawal limit means there is a great incentive to stay and play for longer. In addition, a limit allows the casino to watch its cashflow – a major jackpot win has the potential to bankrupt a smaller site if multiple players withdraw their total winnings at the same time.