There's no one Making such an amount of money in gambling constantly, those that are actively involved in gambling would lose in the long run.
If you chase something like this you will get addicted, there's no amount of money you can make constantly every month from gambling.
This is a fact but this also means that there really are people that can make that amount of money but it won't be the same for the next month if they gamble again.
I thought I could make 100 dollars monthly and I came up with different strategies but none of them worked, I lost a lot of money in the process of doing this, I had to start changing my mind about gambling. Now I only gamble for fun and not to become financially stable from it.
That's a good story and your experience speaks for everyone else. That with gambling, you can win some money but if you totally depend on it, you'll get the wrong idea. But it's also a half truth for the idea when people say that it's only for having fun. In all of this, we have to balance our gambling activities and still live the life that we're living now.