70% premine by Eth insiders who now dump ETH on you at every local peak is just one fact…
Fundamentally do you understand the difference between proof of work and proof of stake? I’d start there if you still are left wondering.
If someone holds more gold than you it doesn’t change anything about gold’s properties or anything (Bitcoin is the same way).. This is different from If someone or a small group of people owns 70% of the shares/issued stock and are able to manipulate the price and make changes to the company how they see fit.
One is a centrally controlled company at best and the other is unchangable stable state internet property.