Not only is luck a big part of the play but even if somebody is able to pull this off and make a living off gambling, it would not work infinitely.
This depends on the kind of game a gambler is playing. When we say a gambler can make a living, that already implies consistency.
For example, if someone is making a living through sports betting, I don’t think that will just stop in the future. The leagues will continue, and as long as the gambler stays updated and their method keeps working, it won’t become obsolete.
Those who gamble consistently and have the ability to become professional gamblers, of course, it is possible to make gambling a major source of income, such as gamblers who have extraordinary skills and abilities in poker games and can often win millions of dollars from each game they play, but for those of us who are just looking for entertainment in gambling and also beginners who rely on luck as capital to win, of course, will not be able and do not try to make gambling the main income, because it will only make us worse off in economic instability later.