I think there are few people who have achieved such a thing, and even then I think few of them would be willing to comment on it here. Of the cases I see, many of these people have achieved such success by luck. So it's a pretty risky thing to try.
Winning jackpot happens once in a life time and only a very few had made some good amount of money when it comes to gambling in the online space,there might be big whales in the real world but here all i hear is the losing streaks from the players and i have seen some lucky fellos who won some.