Inform The Public

You see, trade, the foundation of all such systems, is completely unnecessary if there are more effective alternative methods for people to fulfill their survival needs, thus the survival of trading systems depends solely on their capacity to effectively incentivize the suppression of any and all such alternatives. 

If this means withholding necessities from people who are unable to trade and penalizing those of them who defensively defy such discriminatory trade embargos, if this means creating a society that makes not trading almost impossible (and, in some cases, trading almost impossible), if this means war, if this means leading people to believe forever that survival needs are only attainable through trade, if this means sabotaging the trading power of a particular medium of exchange (such as, say, creating centrally controlled money systems that siphon wealth upward rather than horizontally), if this means rebranding ancient humans who survived effectively without the need for trade as primitive know-nothings, if this means turning excessively well-off traders into idols or role models, if this means dumbing down the population, destroying resources that nature offers all too readily, suppressing technological innovations that render trade to be permanently obsolete, or endangering all life on earth — whatever violence it takes will be done or at least attempted in order to keep such systems going.