Big blockchains like BTC,ETH,NEO,ETC will still be available even in 2022. I hope, In 2019 we can see the full releases of EOS and especially TEZOS, which are "Ethereum killer".
no one will kill the etherium. Strongly many technologies use it, Not only coin projects but with infrastructure
Yes I agree. It seems to me that there will be coins that were the first and coins that brought the technology!
Unfortunately, I meet very few projects that really use blockchain technology.
Do you know of such projects, who use 100% power blockchain?
Yes, for example, take a look at the project in my signature. Very strong project. Infrastructure is fully tied to smart contracts. And contracts bring dividends to the holders of the token. The project makes casino and high-tech contracts. Up to what progress has reached.