From movies about casinos I know that casinos monitor almost every player, and they have screens with graphs of these players' victories. And as soon as someone starts winning constantly, he immediately attracts the attention of the casino administration, and they immediately begin to monitor this gambler's game.
And I know that bad casinos can simply ask such a player to leave the gaming room without looking into it, or cancel the chips.
That is not a lie right there because I have heard this happening but I do not know if it is for all casino. But as a business, they are supposed to have the data of all their winners to have a record they can use to defend their claims when someone claims to have won from their casino and spending the money lavishly meanwhile it was a lie and it was from other illegal means that the individual got the money that he is spending. Casino not having record of winners can put them into problems that they could have gotten out of with ease. Casinos hate winners and they will start observing you when you become a frequent users. You should not gamble from one casinos too often when you are always winning, try other casino to avoid attention.