I agree with the fact that Ethereum will most likely lose its second place in terms of capitalization, but this place will be occupied not by EOS, but by Ripple (XRP). Already, the difference in capitalization between these coins is insignificant.
There is no bottom for cryptocurrency because its price depends upon the investment. Ethereum is the second biggest coin in the market and the investment capital is increasing day by day. Although these days the price has down sharply but I am sure in the future it will regain its previous price which was about $1000. It has great potential and will give high profits to its investors.