I think that people are afraid about the centralization with upcoming consensus switch to Proof of Stake.
More you hold, more power you have.
I don't like the new update because you have to stake at least 21 ETH to get the reward. Why they can´t do it as ICON - you can start stake with only 1 ICON.
yes, could happen the same that happened to eos where most of the top block producers now are exchanges holding a huge bag of tokens. I don't know if anything can be really decentralized based on amounts of money - censitary voting has existed in the past and we know it's a bad system.