moreso reasons why Bitcoin will likely survive are thus
Bitcoin would keep staying on top other coins because it's a reputable crypto currency and most largest in a scale of adoption that has also attained the greatest security mechanized features and also the potentialities to maintain stable valuability.
you can't really tell for sure, reason is because you don't know if there are still upcoming coins that can take the position of bitcoin, you can't really predict what will happen in years coming. However let's take for instance when bitcoin has no value, have you ask yourself that when bitcoin has no value which coin was at the top Before bitcoin came to take the place? you need to think about this before saying that bitcoin will keep staying at the top there are still a lot of coins that are yet to be listed in the market, you can't really predict the future of those coins not until they are listed you don't know if they can overtake bitcoin, so all we need to do is to keep watching and see what will happen in years coming.