Sometimes the reason why gamblers used to see there potential winning as there's is purely because of over confidence. They fail to understand that gambling is a game of luck and as such it will be wrong for any gambler to treat there potential winning as there's. However, I have seen scenarios were the reverse of what you actually explained happen.
It's quite understandable that many people gamble, and many are confident that they can win big on a single bet. However, this often leads to addiction, making it difficult to break free, and ultimately ruining their finances because most of their money is spent on gambling.
Therefore, we must be self-aware. Betting within our means is the right behavior. For those who bet beyond their means, gambling is no longer just entertainment but rather a means of profit.
If anyone thinks that he can take one single bet with going all in and putting all his money in their bet and think that he will become rich because he will win that bet then I'm afraid he's going to lose it.
No doubt gambling is risky but when gamblers do such foolish things it shows how desperate they are to get quick money but doing so they will only add disappointment and they will lose money and become frustrated. I don't understand why people believe in the success stories where one person win jackpots those are such once in a blue moon.