I am not sure that is the case. Remember when it was said that BTC anonymous marketplaces couldn't be stopped. They are regularly broken up and many prosecute

I am not sure that is the case. Remember when it was said that BTC anonymous marketplaces couldn't be stopped. They are regularly broken up and many prosecuted and put in jail. Of course more arise but the FBI and others are constantly "mowing the grass" to keep it under control. Mowing the grass works, it doesn't make the problem worse, it reduces the scope and number of players, and disincentives many players.