many new projects are under bsc but there are a few that is created under etherium .
their devs can be a die hard eth fan and they still believe on the potential of eth and about the project with multiple chains so far i joined one of it and they are partnered with kuckoin .
soon this can be a thing but it was a little hassel to create a new network and transfer to one chain from another when transacting.
however, ethereum is a pioneer for the growth of smart contract networking platforms. ethereum has been the inspiration for the development of several other smart contract networks. even BSC and RSK are also built from the development of the ethereum smart chain.
that's why until now ethereum is still too strong even for BSC which got the biggest adoption this year.
eth was like a bitcoin.
if btc is considered as the father, the eth is also the father of the smart contracts. this is ehy some projects are still under the eth because they show a respect but not only new projects,
i believe even the founders of other chains do also have a respect to etherium but we cant show or they dont show it publicaly.