Why does there have to be a system? I produce a good you want. You produce a good I want. We trade for goods, or you take silver, gold, or crypto in exchange for my goods. It's that simple. There is no control system. We simply trade. Exchanges of goods and things we deem valuable are passed between two people voluntarily. Both people walk away happy with the transaction.

People don't need an outside control system to have an economy. A blockchain perhaps to maintain records and prevent double charging and other problems of long distance commerce? Sure, that's a system we have and that helps people instead of robbing them. A banking system in comparison? No thanks.