If witnesses are arrested due to being byteball witnesses, I can guarantee you, world would have become something that you would desire to be in the world of the 1984 novel.
Many will agree that this will be the world in which we live now, where people ensuring the workability of payment processors used for illegal activities are imprisoned.
free, uncontrolled money is not what governments want to have. They will break any such system, provided they can.
Governments are good at cutting off the heads of a centrally controlled networks like Napster, but pure P2P networks like Gnutella and Tor seem to be holding their own.
Satoshi