Naah it won't happen. At least not in the upcoming year. For that to happen the market cap of eth should increase 4 times more than the total amount invested in the cryptocurrencies. There should be some heavy investing from governments and banks in order for it to be possible. However, the fact that eth is going to surpass bitcoin is inevitable. It's just crazy to think that bitcoin will not be the main currency like bitcoin is going to be the alt from then on. I can already imagine the news articles like "Bitcoin Decrowned by Ethereum", "Is it the end for bitcoin?", "Bitcoin is dead, long live ethereum" and so on. It's a little bit sad because if I want to use cryptos I will have to choose eth and the problem is that I don't believe in it's idea :/

Well no one is saying that it is going to disappear, but the fact that it is going to go down is definite. And when you take into consideration that there will be governments pouring money into it and tons of app creators it is kinda possible, though not in just a year as I said. I wouldn't be surprised if it happens in like 3 years if the pace is going to continue like that.