Wrong, it's because their real service is optimum. Those pools are behaving perfectly and have a long track record to prove it. Furthermore the miners can quickly switch to other ones.
Then I don't think it's useful to compare ETH and EOS, from what I get EOS is an attempt at a decentralized storage solution. ETH is in another game.
(it must be boring to be hunted? or not?).
I probably don't realise this but what you've described is the essence of DPOS.