To me, decentralization isn't just about avoiding control. I think that the network effects that decentralization yields are the only way to compete with an established network. It's hard to get people to agree on which centralized alternative to use, but if structured correctly, there can be just one decentralized alternative with several benevolent forks with different features, but a shared data store. No one's in control, and everybody wins.

And it is more than possible! Eris Industries inception project was effectively a reddit clone running on etherium.