One of Eth’s biggest competitors is Binance Smart Chain. BSC offers a similar decentralised platform for building & deploying smart contracts & decentralised applications (DApps). It’s gained popularity for its lower transaction fees & faster block confirmation times compared to Eth. BSC's native token BNB is used for various purposes within the Binance ecosystem. Eth and BSC have different design philosophies & target audiences they both aim to provide solutions for decentralised finance (DeFi) & enable the development of innovative blockchain based applications.
From a technical aspect, I think BNB is highly dependent on the actual exchange "Binance", which makes it not as decentralized and independent as maybe some others, even though their CEO seems to be quite skilful. Also their Token burn is a good possibility to reduce supply.
ADA has almost no use case compared to BNB, which makes it hard to compete.
I hope to see more development at a later time...