In my country, there's a guy who actually did it. An anarchocapitalist named Daniel Fraga. Just a completely surreal guy. Police would show up to his house and he'd film himself calling them parasites of the state to their faces. Used to make videos criticizing the system, the government, the courts, the judges. Eventually tried to expose corruption. Government tried to freeze his accounts and discovered he had $1 in them. He had gone all in on bitcoin. To this day I believe the government has not seen the money. One day he just kinda disappeared. He's either in some paradise enjoying his billions or dead.

If they use monero it isn't possible to see the buyer