If you can't detect the crime without building a pervasive surveillance state, it probably shouldn't be a crime and we're going to make it hard to detect and prosecute
This makes no sense to me at all. It is, for instance, incredibly difficult to track and prosecute child pornographers.
Child pornographers are a criminal enterprise. They have to do physically significant things like kidnap children and produce pornography, and then sell it and accept payment for it. That's not "private criminality" at all. That's comparable to detecting and prosecuting counterfeiting, or a protection racket, or other forms of human trafficking. Any time you are doing something criminal for money, that takes it far outside the realm of "private criminality." It's racketeering. Organized crime.
Are you referring to the buy-side of CP? Yes, that's hard. But those are also the low-value targets. They would mostly get rolled-up once a producer of CP is caught, no?
This makes no sense to me at all. It is, for instance, incredibly difficult to track and prosecute child pornographers.