Can capitalism exist without govt

[Corrodith]

As soon as you have taxation, you no longer have pure capitalism. Capitalism and government are really mutually exclusive.

As far as these questions of currency, banking (fractional vs. full reserve), contract law etc., these things CAN be handled in the free market.

Dispute resolution organizations would be third parties signed on to any contract where each party in the contract wanted insurance of enforcement of the contract. There could be many competing organizations of this sort, ensuring that the most reputable, fair standards for contract dispute resolution.

Fractional reserve vs. full reserve, etc - Why does there have to be just one answer? You can have multiple banks and currencies competing against each other.