0: trade only works if the sum of your trust in the legal system, intermediates, and counterparts reaches some threshold. The same is true of any interaction where the payoff is not immediate and assured, from taxes to marriage and friendship, and, no, it is not possible to eliminate it, nor would that be a society you’d want to live in. The only systems that do not rely on some trust that the other person isn’t going to kill them are maximum-security prisons and the US president’s security bubble. Both are asymmetric and still require trust in some people, just not all.