There are already ways to avoid that outcome today. You can use a fresh wallet and launder the money through a mixer like the other poster suggests, but you can

There are already ways to avoid that outcome today. You can use a fresh wallet and launder the money through a mixer like the other poster suggests, but you can also use shielded transactions like Zcash has (based on zero knowledge proofs) or coins where transactions are private if there is enough volume like Monero.