As of now, I am still seeing ETH to be the market leader for smart contracts. But we never know, maybe there will be a great project coming up to replace ETH in becoming the smart contract market leader.
Ethereum is the creator of smartcontract and other platforms only plagiarized the smartcontract that created by ethereum. EOS is a crap platform consider when dan larimer was seeing an opportunity to get a lot of money when he was moving to the EOS and leave steemit that this time it has no future.