Ethereum is indeed well-known as a network that has quite expensive fees today, there are even some transactions in purchasing coins that actually have fees that are more expensive than the price of the coin, and this is why now many cryptocurrency projects are starting to switch to using the BSC chain and also polygons, because the gas costs are much cheaper than eth, but even so, it will be very difficult for platforms like bsc and polygon to be able to beat ethereum at this time, because after all ethereum dominates smart contracts that are indisputable nowadays compared to BSC, besides that the nature of Since Ethereum has been completely decentralized for a long time, they are still believed to be the largest cryptocurrency chain that exists today.
In the past many Altcoins were built using smart contracts from Ethereum so that's what made Ethereum very popular and now BNB is also running this kind of thing through the BSC network by applying cheaper transaction fees than Ethereum so that Altcoin developers want to use it. BSC as a smart contract for their new token, as well as Polygon which has started to enliven this competition by implementing cheaper transaction fees from BSC so that new project developers will look at it as an extraordinary option at this time.