ADA has a big chance to topple Ethereum's market cap. What ADA can implement in their mainnet in September is Smart Contract, defi integration, nft compatibility… Everything looks very promising to make a big change. The nature of the altcoin market is always changing whether it is slow or fast to match. ADA still has the ability to do that although the gap is still huge.
Altcoins market often surprises us, changes can happen very quickly in a short time too. But I doubt that Cardano will ever be able to overthrow Ethereum, This is too far and I think before Cardano goes higher, Ethereum will first head to the moon.
But what I note is, Cardano is worth investing in large amounts at this time, because I am also optimistic that this coin will be very familiar in the next year and will bring surprises.