You have to have some system where every vendor from the taxi driver in wellington to the chinese supermarket in auckland to the stand selling noodles in singapore can take your money and give you what you want. You think this can be done with a mom and pop operation? You think it can be done without a centralised system?

People talk about how crypto can solve all this but the same people can't agree on what crypto to use and have no idea what the transaction rate of global payments are or the fact that transaction costs in most crypto payments are outrageously high.