Ethereum is the King of ICO Mainly because smart contract and the Dapp projects explosion ,  Lisk, NEO, EOS etc are all mutable trusted third party controlled platform with effectively zero developer uptake and development tools.

Ethereum sidechains like Loom's DappChains and the POA Network's POA chain have all of the scalability of these more centralized chains, but with the ability to host EVM based smart contracts and to interoperate with the Ethereum mainnet.