Of course the altcoins will survive and end up displacing bitcoin from its place of privilege. Moreover, it seems clear to me that the future belongs to the altcoins and bitcoin is doomed to occupy a very secondary place in a couple of years. However, I think that as time goes on investors will be more selective and this will prevent so many altcoins from proliferating as they have until now, dominating only five or six as the most relevant in marketcap.