Change/ revolution to payment systems is already here in the form of bitcoin. It may take few more years for more countries to realize the actual need of decentralized payment system. All countries specially asian and african countries need decentralized currency like bitcoin to get proper valuation of their local currency which is currently dominated by USD.
Indeed. I like this decentralization idea and thanks to japan for they are always open to technologies. Hope other government follow suit.I think I read somewhere that theres a cryptocurrency being on trial in japan right now.