Yes that is true because people come to gambling with some preset requirements like they want to this gambling winnings to some of their needs but when they lose initially they will be in a bigger problem so they will try to win again their lost money to recover but at the end they will lose more. If one don't control them self then gambling is wrong for them.
But people really fulfill their goals.
The problem is that not all people. And those who dont can end up in big depressions after.
So I think people should only gambles as much as they can afford, and only if they are not in a financial crisis.