Most economists still believe that supply prices and demand by informed customers do conflate to produce a fair price, in spite of all the evidence to the contrary.
One option is to make ‘local’ systems interconnected so that participants can clear and settle payments across systems (in one or more currencies) without participating in each of them. Another option is to build up cross-border and/or multicurrency payment platforms allowing each participant to clear and settle payments across jurisdictions and/or currencies with their counterparties.