The people that are making money consistently through gambling are called grinders
I don't think that exist such kind of people of players. Are only urban legends.
They exist and they are alive. You need to open your eyes more about this stuff and read how many proffesional poker player that make thousand of dollars atleast per week and millions per year. Their name exist, you can simply google them
First thing is that even if exist such players, are very few. Maybe can be as few as the fingers of one hand. And never such figures can serve as example to tell that gambling (any kind of it including the poker) cannot bring loss in long term. Cannot be 5 or 10 or even 100 people representatives of all the army of million gamblers who for sure lose in long term if gamble.
Then the second one is that, even those one day will lose for sure. There will be always new entries more capable then them in this kind of gamble. The firsts cannot accept this and will continue to play until will lose all their profits. Or at least most of those. Here we are. Even the champions now are ex champions and losers in long time in gambling.