There's simply no doubt that the world is full of centralized activities, from government approved and controlled system, In our world today when reading through or taken a tour, you began to found out that except Bitcoin the digital currency of the people, nothing else is truly Decentralized, just like Charles has said, the only Currency or project that could have come closer to decentralized system was the Ethereum, which is now entering a further mental phase of highly centralization. Nevertheless as Pooya has stated too.
Decentralization is only good for certain things not everything, The example of ICO scammers is extremely thoughtful, but I will like to see a world that's more decentralized than the current system, We see all around us today.