I actually think it is not. Bitcoin will always lead and hence it is the gold of future. It will keep growing slowly.
Ethereum is the altcoin that has a great chance to be used daily by the general public for every purpose.
Till Steem gets strong enough to roll over Ethereum. But still there are several things that are handy and useful on ETC.
Litecoin is just a copy of Bitcoin with no additions. A copy cannot be succesful in a long term point of view.