They think they hit a jackpot that someone is paying them for their KYC but, that's not the case. It's not a real thing that they should allow to themselves because it won't only be used to KYC in casino accounts but also for something else. What if the user of someone's kyc is going to use it for scamming purposes? they can easily do that when there's someone in front of them that will be found as their identity and thanks to the person who has sold his identity for the different purpose at a very cheap rate.