Thank you
What's your point of telling this? Of course people are already aware that gambling is just for leisure and not for income purposes. Just don't get addicted to gambling or else you would spend all your savings just to play at the casino than to think about your daily expenditure.
and can play with the amount of tens of bitcoin in a single bet. could he possibly live from gambling with such a profit?
I believe those whales are not using gambling for living, they have so much money to bet means that they are rich already. Logically they do not need to gamble for living, but of course we do not know the reality. Make a living from gambling is possible for professional gamblers but most of them are not playing in pure luck based games. Most of them are poker players and sports bettors IMO.
Most of the people who got rich in gambling didn't do it through sheer luck. Professional gamblers clocked in a lot of losses in time and money in gaining experience and popularity, enough to make gambling their bread and butter. Expecting to arrive in that level easily is a foolish thought. Especially if you're a small time gambler.