I concur with you that ethereum is the ruler of ICO. in spite of the fact that there is no ruler and ruler in this crypto. just the gainers and lossers yet I trust the correct term for ethereum is ICO ruler in which erc20 tokens are running by ethereum in which this every one of the tokens being paid in ico bounties. Concur with your suspected that this Ethereum is the lord of ICO in light of the fact that as I saw numerous ICO will go to Ethereum after the crusade for the trading of their tokens despite the fact that cost of ETH is rank number 3 of Bitcoin and Bitcoin trade however out terms of ubiquity this can assemble supporter relatively equivalent to Bitcoin.