Following that logic, Facebook is not centralized either. There is one shareholder who has mayor stake in the company and which pretty much acts in "the best interest" of the company because of that. So, why do we need cryptocurrencies. Can't we just trust Paypal and Facebook? They are acting in the best interest of their companies too. They're kind decentralized as well. Got a lot of people from all over the world holding their stocks. Let's let Paypal put their money on the blockchain and let them handle the permissioned ledger and it's going to be alright.
The reason I'm in blockchain is exactly to not have this situation. On Steem there was recently a situation where some Witnesses thought about forking the chain, and Steemit Inc said they could elect just the 20 witnesses themselves in that moment.
There is the possibility of that happening, and they said they would do that. Is that decentralization or does it just kinda seem like it.
And of course, as long as they got 30 votes to cast, they could just do that, with 10 votes, especially on the short term, that is much more difficult.
I'm not saying that huge stake holders shouldn't be able to have a big influence. And I'm not denying that this makes sense in the context of game theory. Nonetheless, on Steem this influence is essentially to big, which is a big risk for the chain. So reducing this to 10 votes, would improve the situation while still maintaining the central elements of PoS. (And no, I don't want 1 vote, I want 10).