Ethereum has gone through several phases and despite the several competitors in the aspect of smart contracts protocols, ethereum has maintained her place. There was a time we had NEO was the next big project as it was Chinese base and has a huge support of China big shorts. At the end of the day, nothing came out of the project.
NEO was once considered the second Ethereum of this market, but it all stopped at the prediction because in the past few years, NEO has not had any significant improvement. Since ICOs no longer attract investors, coins like ETH and NEO are no longer chosen by investors, so they choose to sell instead of buy. I'm not sure what the future of these two coins will look like but hope that both will be better in the future.
In crypto space the people who believe on the platform and its solution also if you are able to predict future events then you can gain big . Ethereum might have small volatility now . Crypto space is completely big volatile market . Instead of going with current trend if you really focus on ethereum 2.0 release then you never think to sell ethereum. I am not sure about NEO but ethereum will be the strong contender for near future . Once 2.0 release we cant predit the price it will sky rocket for sure.