It’s hard to reason about your hypothetical, because it seems to directly contradict actual experience. But it seems fairly straightforward to reason about what I, personally, would do: I want the chance of crimes against me minimised, so I accept the no-laws state as the best way of getting that. But if I nonetheless am among the unlucky ones, then I want revenge, so I get revenge. By hypothesis, the chance that the other guy’s friends will successfully punish me has got to be small, because we’ve established that crime is very low in this hypothetical universe.
It’s hard to reason about your hypothetical, because it seems to directly contradict actual experience. But it seems fairly straightforward to reason about what I, personally, would do: I want the chance of crimes against me minimised, so I accept the no-laws state as the best way of getting that. But if I nonetheless am among the unlucky ones, then I want revenge, so I get revenge. By hypothesis, the chance that the other guy’s friends will successfully punish me has got to be small, because we’ve established that crime is very low in this hypothetical universe.