Isn't it because that they think they have enough access to money to gamble as they like makes them often loose control in gambling with all responsibility and integrity, rather they make it a freedom abused upon to gambles with the money they either stole, inherit or got as gift because no average gambler will suffer to earn a living and ended up squandering the entire money into gambling, well this is common the the celebrities anyway, they also spend lavishly when it comes to gambling, they have no caution for control.
Such things are a quality of a responsible gambler since such people don't rage when they lose, they stay calm and handle the situation with care so that it doesn't get from bad to worse and they can control themselves so that they can have control over their gambling.
And it's true that if we can stay calm, we can handle the situation well and even though we've lost a few dollars, we can still smile and walk away from the casino. But it's not easy and it takes a lot of practice to control the rising emotions.