That's the whole point isn't it? We gamble ,speculate,start a business, etc to be RICH. However if I were already rich,I would gamble EVEN MORE! Money makes money,the rich get richer,etc you know how it is.
Just put in mind that you cannot make money in gambling when you are being a gambler, only those people who treat the gambling as business can make money, they are the owners of the casino and online dice.