Probably, BTC may not be the champion anymore but will still stand at runner-up position thanks to its historical role. ETH providing reliable platform for many valuable tokens can overthrow BTC to become the king. One of the coins with 3rd-generation blockchain like ADA or EOS will deserve the 3rd.
Anything can happen, and that's my prediction. What's yours?
Yes, I think it can happen in the year 2020 the ETH is very potential for it. BTC is still very few years dominated by has a value of the selling price of the highest. And have the fans very much so as to make the BTC is not replaced until now. With BTC to make all Altcoin also continue to undergo development.