Competition between local currencies Vs crypto currencies are in peak now. Crypto currencies have occupied currency market causing local currencies enforce (banks) banning of crypto currencies. We can see number of investors have turned towards to bitcoin and other crypto currencies with large scale. Will there be a chance / time bitcoin and other crypto currencies rule over currency market and local currencies get disappear slowly in a decade or two?
Despite the existence of cryptocurrencies in the market are more prominent, they cannot replace the standard currency (which is fiat) given the economic discrepancies over developed, developing, and underdeveloped countries. Embracing the blockchain technology, which compromises of a complex system with a need of technological equipments and developments, are only applicable to countries who are able to adapt as such. Countries who are from the underdeveloped sector have their hierarchy of needs and changing their payment structure is far from their priorities as of now.
Though it may be impossible today, it is still possible in the future when all countries are able to adapt such technology. Having a digitalized form of currency reflects convenience and safety among users as it eliminates the need for a peer-to-peer transaction. More importantly, the fiat based currency has been around since time immemorial. I guess we are bound to shift to a new era currency- which bitcoin may produce in the future.
They can't do it over night, but even those underdeveloped countries will have to follow standards, not their but standards created by advanced countries. Countries that dare to not follow will stay behind, people who live there will feel that in very bad way.
Fiat currencies will fail, sooner or later, read that like in advanced countries sooner in underdeveloped later. They are here for a long time and it's time for a replacement. Not because that fiat system is working good, because its making a lot of problems to majority of human kind.
Maybe I believe in crypto future more then others, but its inevitable how ever you put it. How ever you test it in the end you will come up that world needs crypto for better future of all of us.