truly affect the global economy, I will make it simple based on my logic. there is transition pricing from the old price (using fiat) to new price using cryptocurrency. that condition will create a high demand on certain cryptocurrency that will affect the fiat will rapidly exchange to the new condition which needs more to adaption. when cryptocurrency become global currency made it can be used to pay for everything in all country over the world. it will make differences especially on production expenses which different in each country, inflation is assurance. will it become better or not? nobody known exactly there are potential that can create better condition or there are harm factor can make those become worst.