Not all gamblers will accept the offer and take the opportunity to be able to get it for free because if the offer that is given is not very attractive and profitable then it will only be a waste of time making it impossible for most gamblers to do.
Gamblers enter the world of gambling with the desire and goal of being able to get a faster and bigger profit. Even though it requires money and is not given freely, there will still be many gamblers who prefer to spend their money for the benefits they get.