You yourself can see that fiat money has been going on for how many years, and they have not been found to replace it. Now the new technology is developing e-wallets and electronic money. There is a variety of money, but it is the best of all and the winner of all is the crypt with its flawless blockchain system. If, of course, not a blockchain technology, then of course it would be difficult. I am sure that in the near future, the broadcast, Bitcoin, EOS will prevail on the entire system of the world.