Yes, this makes sense. Bitcoin is probably not suitable for replacing every and each fiat coin in the world right now as it is and make an unique, universal coin... So another coin will probably replace it, or Bitcoin will evolve so much that it will make no more sense to call it Bitcoin. Only future will tell.
Maybe there will be a time in the future that bitcoin will be replaced by any of the cryptocurrencies that we have such as etherium, litecoin, dogecoin and others. It will take time since the time that we have today, where bitcoin is getting its success such as a dramatically change of its price and any other events that helps us to become rich using bitcoin.