It seems to me like altcoins are losing theirs to Ethereum. Just a few altcoins has been doing good as of recent, like BNB. Ethereum keeps growing in market cap and others keeps on losing.
Ethereum looks
very strong, much stronger than other altcoins. I can't find a single chart that compares. Sentiment is lovely too. Everyone keeps saying "Ethereum is worthless cuz no ICO bubble".......clearly most people have sold or shorted it.
My bet is that 2020 will be very bullish for altcoins. People are betting that Ethereum will falter in the next bull market, that something shiny and new will take all the spotlight from it. Looking at the ETH charts though, I doubt it. Flippening talk will come back.