Bitcoin is the king of digital coins, and it has been around from the time when there was no other currencies like how much there are now we can see in the markets, so they wont be able to even come near bitcoin in terms of price or popularity, they run because of bitcoin but bitcoin does not run because of them.
It cant replace buy the other crypto right now or in the next few years because of its cool aspects and characteristics! But we can say that it is possible soon but now it is impossible!
As of now we can really see that most of the other altcoins doesn't even got the price as half as bitcoin so for now this query is really from realistic.