If someone tries hard to do money laundering then he will definitely succeed because it is normal that the person doing money laundering will have huge amount of money so in today's world many things can be done based on money any money launderer can create his own casino site and He can control his own casino site as he wants and launder money through that site, but he has to work hard for it.
With money, you can hire some expert to do this stuff easily, and also they can hide the money very well without getting caught. the government already knows this stuff that's why nowadays they are putting heavy regulations on Crypto Casinos as they did in Bitcoin mixers to prevent people from laundering their money and using it for illegal activities as well. With this new idea added to the lists of cops, I'm sure those who do this stuff are considering making a plan B or thinking of another way to hide their actual amount of money.