This man hasn't given full details as to what happened between him and his favourite casinos; how he's got his name flagged in Thier system and how he's been banned to not win more than $200... I think he's gone against the general T/Cs of the gambling commission and probably, his IP and credentials have been reported to the commission by the casinos involved...
Sandra 🧑🦰
I believe this is an story of someone who was mostly dealing with brick-and-mortar casinos, to be honest. Perhaps this also happened in an era where online casinos were not as common as they are today. Because I cannot conceive all online Casinos are so well coordinated in order to ban certain individual at the request of themselves with such a widespread manner. Usually, as we all know, exclusion programs only apply to specific services and platforms and do not affect the experience on others.
So if you had my guess, this story is from a country where Brick-and-mortar casinos were more available than online ones and also where gambling law allows one to get blacklisted nationwide in an irreversible way.
There is also a chance this whole story to be frictional and someone just said that to OP for whatever reason.
Anyways, regardless of whether this is true or not, it is an interesting system, indeed.