chances are very small. fiat has advantages in terms of direct payments and real value. digital currency will be useless when there is no internet reach. it is certainly very detrimental. so, the existence of fiat is still very bleached.
Although the chances are very rare that bitcoin will replace fiat, but i think that with increasing demand of bitcoin is in fact making bitcoin more stronger. i think that in such modern time it is very difficult to think about the world without internet, because internet is not only use for bitcoin for a number of other purposes. so we cannot spend a single day without internet. I think that its difficult that bitcoin will replace fiat but will surely reduce the use of fiat currency.
sure, the chance this will happen might be low in the present, but how it will be in the future is all that matters. as it is, bitcoin is gaining momentum, and as time goes on, it only makes sense that bitcoin begins to take its place in becoming a part of society's norms. to be honest, i see bitcoin perfectly filling the archetype of the sci - fi world's currency (galaxy credits, space dollars, you name it), and i can only see it becoming more and more likely to be normalized as the world becomes more technologically advanced. we can't cling to how the world works as is now forever, we must always strive to adapt and evolve.
no, this process will ruin fiat economy and politics will never tolerate power lose.
what if fiat is no longer a viable form of monetary value in the future? sure won't matter then if the system caves in.
I am pretty sure cryptocurrencies will replace fiat in the near future. I dont think it will be BTC or any other decentralized cryptocurrency.
It probably will be a coin "based on blockchain technology" which wont be decentralized and will be in "full control" from governments/financial institutions.
Like russia started to roll out the Crypto Rubel.. i think a lot of countries will follow soon.
I hope they wont see BTC as a threat to them and start banning it everywhere.
not so sure about the near future, the world just isnt at the point where that could easily happen, there are too many barriers to that as it is now.