Yes there is a chance that this will happen but we will see what is gonna happen lets hope on a good future and lets say that the bitcoin will not get replaced.
I think its already too big to get destroyed by another altcoin honestly.
there is always a chance for everything.
even there is a chance for you to get hit with a rocket when you go out of the house today.
but happing or not is the more important question here.
and since the chance is near zero, it will never happen.