Bitcoin's price is flying and rising with rocket speed.. i think bitcoin will survive always as the leader while it may have competitor but i think bitcoin is the most expensive and most well-known coin in crypto currencies. So it will stay as it is..
Yeah and the only coin I saw with the potential of bitcoins was ethereum but anyways its just another successor of bitcoins and in no way dominate bitcoins because its over is determined by bitcoins and obviously its impossible to overshadow bitcoins.