This is also strictly business, some will not request for a withdrawal fee all because they understand the way gamblers will appreciate this as opportunity and be rest assured of using their platform each time as to make withdrawal can never be an issue for them, just as the way they never finds it difficult to make deposit, while in some cases, some will charge below $1 and I've seen those that charged more than $5 to make withdrawal, to me, they are doing this to keep gamblers on the run of using their entire money to gamble, when they consider the cost, it may be discouraging, they may then decided to leave such for playing game instead of going towards the withdrawal fee charges.