Wrong, ETH will be $3000 and BTC will be more than $20.000 just at the end of 2018 
when it is time for 2019, it will start again like btc will be bla bla at the end of 2019...
3000$ is really too far for ETH. I can't imagine that price in the bear market, ETH will end in 2018 for less than 500$ price is sure. But in 2019 everything will be the same as you say when it is time for 2019, it will start again like btc will be bla bla at the end of 2019...