It may reach the top but it will be a race where bitcoin and Ethereum will be seeking the first place. It would be hard for Ethereum to stay at the top because it is not the only one who seek for the crown but also Ripple and other Altcoins.
What is this top for Ethereum? Is it 1.5 thousand, the largest price of ETH in January? Is it 2, 3, 5 thousand? This altcoin will definitely gain but nobody knows its future price. we can guess it only.