Personally I believe that ETH will remain stable at No. 2 for many years to come. There is no altcoin that can surpass ETH, and soon we will see ETH 2.0 a great move for this project.
as a rating may be the same. but when you see the popularity and market interest, ethereum might be replaced by other potential assets. for the last time, we have seen transaction costs from the ethereum network which has increased somewhat as usual. hopefully, this won't burden the traders of ethereum assets.