On before now gambling was seen as a dirty habit and was painted black in the society because way back the society believes any gambler have so many bad habits too like doing drugs which most gamblers was mafias not just mafias but rich people .
That was then, but now it has become a cash cow for the government and the entertainment portal of the rich and famous, we can say that gambling now is elevated because of the money generated for the government, and some of its patrons are the rich and famous
Even now the scenario is different, there is not much of positive things about gambling. People always see it something a crime because of few incidents that have happened around the locality. Even now almost everyone wants to have their gambling activities to be hidden from others. Not because of they win/loss, but to avoid the term he's a gambler.
So my question now is that can someone use gambling as a means of earning living?
Only the government and the operators can, but for gamblers, they have to rely on luck to make a profit but not something to make a living out of it, others who can make money from gambling are workers and some companies that rely on the gambling industries, like the food caterer and entertainers for physical casinos.
As said, governments and the Gambling platforms make good money. Very limited number of people are there to have a life out of gambling. Here the important thing lifestyle won't be stable, we can see variation depending on the winnings made.