All people say Ethereum is the next Bitcoin, I don't know why they said that, but when I see the coinmarketcap, I know what they mean.
https://coinmarketcap.com/ so which coin the next ethereum?, The answer is no.3 on coinmarketcap,

So do you mean that usdt will be the next Ethereum ? you say that with only from sequence of number on coinmarketcap so it looks like a shollow prediction. only based on trading volume can't reflect the other aspects like features, development, etc.

WTH, they don't even have the same features and usability. maybe you can read some of the articles provided by Polkadot or NEO in this case it will really help you