I do think that in the long run, at the point that people will get more familiar with cryptocurrency, people will see that bitcoin really isn't the best out there and that bitcoin got to this point simply because it is the first and people only know about bitcoin if they have heard of cryptocurrency at all.
So that being said I geus that in the long run (2-5 years) I don't see bitcoin at the top, I see Ethereum and [insert fast coin made for use as a valuta] in the top, cous thats kinda the 2 reasons blockchain exists, the way Ethereum uses it and the way its being used as a valuta kinda thing.