I don’t think there’s any special software that’s excessively costly for casinos to combat money laundering. Most of their processes are based on the mandates of their regulators. This means they’re likely using a universal system similar to what other casinos implement. Money laundering systems aren’t something that run continuously like their daily operations. Instead, they are triggered by specific red flags or events based on the casino’s internal controls.
Some big casino has special software to determine if players are using software to hide their real IP. I think this is one of the software which he is pertaining. This data was mentioned by reputable member here in the forum that has experienced on casino operations.
I think the only method which casino use to fight money laundering is the use of KYC and wagering requirements. There’s nothing they can do anymore if funds was already mixed by the DEX or mixer.