because of its utility and there's no doubt with that.
the smart contract nowaday is very basic thing that every new blockchain is having though, I think the reason why ETH will always have the support because the big defis are already in ETH, AAVE for example with its 10 billion TVL completely dominate kamino, a solana defi (lending platform) with 1 billion TVL even though ethereum revenue has been low compared to solana's revenue due to the influx of capital from the meme trend.
on top of that, ETH also got the biggest USDT minting allocation from tether, so it's no wonder that despite lacking in scalability, ETH is still heavily sought after.
but the problem is, once people realizes that there's other platform out there other than the big ones in ETH, maybe the capital will move and ETH might lose some of its market capitalization.
It was the first in its league.
That's why it's still up in its place under the sun.
Though this position can be undermined in the future Only time will tell.