Do you really think there are many players who managed to make a fortune from gambling and changed their lives for the better because of it? It seems to me that even those who manage to win like that will keep playing and eventually lose a significant part of their winnings, or even all of it. Besides, there are many players who continue to play at a loss and believe that one day luck will be on their side, but all that awaits them are only bigger losses.
I used to talk to players who actually made money from betting by using analysis, logic, and differences in odds. But as a former employee of a betting company, I can say that, at least at the time when I worked there, not all bets were accepted, if the amount was very large. Such bets required approval from higher management. So, making a huge fortune this way is unlikely, everything is limited by the amount you can place without extra checks and without the risk of the bet being rejected.