All coins will follow Bitcoin, and Ethereum will be able to restore prices in the future, but it will take three years to complete. This is a long process and investors need to wait patiently.
I think you are predicting for a much longer time while according to my views we will not need to wait for that much longer. As in the coming month we will see a huge recovery of the market and in that it is obvious that ethereum will recover.
Today, most experts agree that in 2019 the rate of the ether will increase slightly, but the repetition of the growth rates of 2017 - the beginning of 2018. with a 140-fold increase (from $ 10 to $ 1,400) will no longer be. The main reason is the distrust of investors, many of whom have lost money, succumbing to cryptocurrency rush.
We should not underestimate the potential of crypto market, maybe there are investors that will leave because they lose their money, but the market is so wide, we are dealing here with universal currency as no border can be a hindrance. What will happen IMO is that there are still newcomers that are ready to get FOMO.