You nailed it! Or maybe they stick to the same casino but use a different identity, device, and IP address. These gamblers are clever, they always have a backup plan in case something goes wrong. And these gamblers won't stop as long as there are people that are willing to supply them with the documents they need, because its just like a supply and demand thing.
However, in terms of risk, its not on the casino because as long as the gamblers are losing, they're welcome all the time.
Yes, those gamblers are clever to abuse the system although the casino can find them easily. We don't know which way they will use to have a new account on the casino.
And about the document, they can get the documents from people who they meet so they can use the document to register and verify in the casinos. But the casinos will not let that happens as they can check the document and will investigates the account if they think that is too suspicious for them.
The risk maybe for the gamblers because if casino found them and block them, they will lose the access to their account. But they can make another account using the other document and still playing gambling.
Some gamblers do it without the casino finding out, it is only few people that do not use their head when they have already been caught before that they catch again. After buying casino account and they use it under covered without revealing that they are not the owners of the information that was used to complete the kyc, It is when they want to withdraw that they make a mistake by trying to withdraw a large amount instead of withdrawing in smaller values that will not raise attention to their transactions. Nobody is going to ask you to verify your identity when you withdraw $500 to $1000 but when you withdraw amount like $5000 and above, it can get to the attention of the casino or when you withdraw multiple times in a row or in a day.
Even if the casino catch those gamblers, that will not stop them for doing the same thing again because they still want to get what they search for. Buying the casino account can be their ways but they should know that the casino can find them and ban them easily.
Completing the KYC will not be easy for them as the casino can know the pattern that they use before so the casino will doing prevention for those gamblers. Some of them can withdraw the money but the casino will trying to figure out if their account is a real account.
It will continue between the gamblers and the casino but the casino can prevents the same thing so they can run their business. But the gamblers will not stop what they did before as they can do that over and over.