Actually if seen from the growth it, should Ethereum (ETH) be able to compete with the price of Bitcoin (BTC) in the future. Moreover, many factors have now become important support in the scope of Ethereum.
Meanwhile, when viewed from the Market Cap (Total Market Capitalization) Bitcoin did leave Ethereum, with a total Market Cap of $ 132 billion, with the last 24 trading volume of $ 5 billion. While supply Bitcoin in circulation has reached $ 16 million from max supply 21 million. That is, the supply of Bitcoin is getting thinner so according to the law of supply and demand, the price will also continue to increase in time.
As for Ethereum, the total Market Cap or market capitalization is still at $ 31 billion with the last 24 hours trading volume of $ 834 million. For supply of ETH that has been circulating in the market of 97 million without brick maximum. This also makes it difficult for ETH prices to rise further, let alone the available supply "unlimited". Although there are some who say that the maximum ETH is 87 million, but now its circulation has even exceeded that limit.
As you said above about the comparison of market cup ETH and BTC are much different, I can conclude that ETH has not been able to reach 400 $ this year.Price Ethereum Year 2018,Ethereum has not been able to become a major competitor of Bitcoin in the matter of the value of save and exchange rate (as Asset). Fundamentally it has been approved by several major factors, for example, with the EEA (Enterprise Ethereum Alliance) association that has been formed with many companies incorporated therein such as Microsoft, Inter, and CME Group which recently joined.
The association can indirectly guarantee / insure that the price of Ethereum (ETH) will be stable and will not be close to "0" again as it was at the beginning of its release. In addition, there are already many futures trading brokers who already support Ethereum Exchange / Ethereum trade, such as QUINE which has launched Live Ethereum trading.