You started this convo saying you'd prefer barbarians raiding ancient rome to the roman state. So not a straw man- literal reality for hundreds of years. And yes, one solution is to have nothing to be stolen. Have fun with that freedom. Maybe you can find a cave to live in no one wants to take from you. Not sure a drone swarm will be viable in a world where there are no preemptive centralised rules against violence. A helmet might work, but the thugs might have bats?