I think bitcoin is a money too so? how bitcoin replaces money hmm?? it's still a money :3
Haha yea right bitcoin is a money itslelf.It is a currency and has a value in market and can be used to buy many things online so bitcoin being itself money and there are many forms of money as fiat currency paper money and i think any form of money cannot replace each other.
Bitcoin couldnt really replace fiat money anytime soon since bitcoin is only good on online transaction or on other physical purchases which uses a physical bitcoin but still people would prefer to use up paper currency hence this is being used for how many years by people all over the world and as we all now that bitcoins adoption is not really there to consider this things.