Well, that's true. It's important for gamblers to read the terms and conditions to become aware of the rules before playing on the casino.
But the problem is, many gamblers are not taking time to do this before they gamble, even me I am guilty that sometimes I missed to take a look to the casino's rules before I deposit.
It's just a good thing that I never had a bad experience on the casinos where I usually play, it's because these casinos are reputable.
It's long list and usually we accept the terms clicking on the box with a glimpse only without caring to read what's written in it but when a problem arises then we can't blame casino but yes if you are playing in legit manner and are comfortable with casino rules you would not face much problems.