Cardano is really outdated coin and it had plenty chances to overtake Ethereum but Cardano did not achieve to overtake Ethereum.
Now, more modern coins are passing Cardano itself, where we will possibly see an Altcoin overtaking Ethereum.

But Cardano has finished, it really needs a major success to get relevant against Ethereum again, where Cerdano is far away currently.
Cardano is losing ground to Ethereum.