I am sure if a winner falls into such type, a casino will do seriously consider KYC request before processing withdrawal that should be big.
I am not accusing any person of cheating. I am only telling everyone that a sportsbook or a casino would begin doing standard background checks on the account and certainly if the account is new. If a casino is not strict, does not do any background checks and sends the money to the user right away without questions, I reckon the casino will be a target for scammers, moneylaunderers and cheaters. The casino might also become bankrupt in 2 years hehehe.
how do you perform a "standard background check" on a brand new account? specially if you deposit through crypto, what kind of information can you get from running a "background check"? i dont think you should be able to withdraw 10k usd instantly, but i dont see a reason why you would need to go through several security checks after you place a withdrawal request of 300usd. plus, like i have stated before, KYC or "background checks" don't actually provide the casino with very useful information, its more of a tool to make sure you are who you claim to be, and that when they ban you, you cant comeback. when your account gets flagged, most likely it wasn't a casino employee manually looking at your bet history, it was triggered by an automated script that deemed you a "non profitable user" and the same you are trying to make money off the casino, they are doing the same to you. when you are no longer a source for them to profit from, they decide to limit/ban you. i might be wrong here, but i think you overestimate the power of "scammers" and "cheaters" at casinos.