Ethereum ETH celebrated its 4 years some days ago, no one believed the project would have achieved what it has achieved within these four year, as at Oct 2015, the coin all time low was $0.420897 USD and the All Time High $1,432.88 USD (Jan 13, 2018), now the current market price is $235.03 USD. what do you think the next four years would look like? i see the coin going stronger and bigger, what do you think?
Probably it will grow, though I don't expect much that ETH can continue to keep it's stop in the ranking but at least as the market of altcoins will start to grow, we will see some growth. Four years from now is a long period of time which is enough for altcoins to recover and BTC to create a new ATH.
What dictates the bad market of altcoins now is the BTC dominance, in the long run, for sure it will drop.