Most rich people don't believe in luck. They believe they have to take calculated risk and they don't see gambling as major area for taking that risk. They can invest in bitcoin but may not give in to gambling. At least in Nigeria, I don't see most rich people gambling as source of income. If you see gambling as source of income then you will become an addict.
Another observation is the rich gamble reasonably and with the money that they can afford to let go and not chase back what they have lost. If you chase for your loses then you are likely to be an addict.
Rich people calculate the risk in every investment they take, and that is the reason why they don’t get addicted easily, while on the other hand, poor people believe much in luck, and they invest readily without any calculations. That is why they lose a lot in the process of doing reckless investments, and they get addicted to all of that stuff easily.
Gambling is not a good source of income, as it will make you an addict, and that is the reason why rich people consider it as their source of wealth or income.
In most cases you won’t find a rich man gambling because they understand the whole concept of gambling, and they didn’t like to fall for traps so they won’t lose their money.