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.
Correct, i do not see other coins can replace bitcoin, bitcoin is the mother coins in crypto currency that is why the value is very strong than other coin we should continue to used bitcoin to help to increase the existence of bitcoin.