Then there are addictive gamblers for whom constant betting is a compulsion.
A goodly portion of such gamblers are wealthy individuals and are called high rollers or whales because they tend to bet large amounts per sitting. They are also generally well khown to casino operators, who compete vigorously for their business because, given the odds favoring the house, frequent betting of this sort can greatly enhance the casino win amount.
Less sought after are relative amateur players who are called fish by more experienced gamblers.