If there is a billion or two in fraud that is actually stopped by the presence of KYC/AML, then that means that the introduction of this idea is not a complete waste, atleast, it has helped save something.
Of crime is this high even with the presence of KYC/AML, imagine what it would have been like if there was no KYC/AML at all, it would have been way worser than it is right now.
And what I am saying in essence is that, there was never a time the introduction of KYC/AML will completely wipe out crime in our society, it only helps to reduce it.
My personal opinion.