To play devil's advocate, couldn't we question Bitcoin's own state in this regard? Isn't the hashing power controlled by the three largest pools (cumulatively over 50%)? This needs to be substantiated, but I am suspicious of it. That would also describe a apparent 'oligarchy', just as for those others.
Nope!
Bitcoin has miners, has nodes, has the people that decide to use and has developers. They do not belong to the same company or foundation. It is not a small group made up of 12, 21 people.
They are different people with different thoughts and goals. You are confusing a possibility of attack or double spending by controlling the hash power with governance.
Governance is something completely different from dominating mining. At least in Bitcoin.