It takes only really 5 minutes of basic thinking to figure out that Ripple can not be decentralized in any meaningful way.

Ripple is a private company that sells transaction-function to banks. Now imagine they would actually give any control to the coin-holders.... those could then block software-updates if they don't like them, or create their own forks. What then? Ripple tells it's costumers "sorry, cryptoholders had other opinions, we can't fulfill our contract anymore"?   
By design they need full control over the network. 

Their business model is selling marketing BS. First to banks "hey you can use fancy blockchain-tech"... which already doesn't make any sense. They just profit from the fact that banks don't know what crypto means.
And then they sell decentralization BS to the alt buyers. Yay, double-profit.