Agreed - decentralization is a powerful force. In fact, one could even argue that the reason why traditional/mainstream media is failing is because it failed to recognize the power of decentralization and the rise of blogs and Facebook/Twitter. The wave of blogging and social media led to a loss of power for the traditional media elites - they could no longer control the narrative. And, even more, they lacked the funds to provide the same expansive coverage as "citizen journalists" all over the world.
So... I think we will see the same sort of dramatic changes now as blockchain-based social media supplants Facebook social media. That's why I'm so optimistic about Steem and the blockchain. It's going to change a lot.