I doubt that , however there might be a currency that will do very well more than bitcoin , e.g in fiat world where you have different currencies doing very well
I think ETH can pass bitcoin because they have a good coin...
DASH is a promissing coin too however I don't think dash can replace btc.
No I do not think this will happen if I have to be honest, I just do not see this happen at all its not not possible..