and in my opinion Cardano or other Altcoin coins are only able to compete and no one will replace the position of Ethereum which is the best coin after bitcoin.
Bitcoin and Ethereum are good coins and no one can match them, even though there are lots of good coins.
Ethereum is a great altcoin, it has a good future, so it's not easy Cardano will replace Ethereum and other Altcoins can't replace Ethereum.