Now that is naively optimistic and considering that the people running these organizations are rational. I for one will happily switch to a decentralized version for a service as personal as Facebook ( so long as my friends are on it ). My intention was to balance the argument since it is very easy to take your comment and interpret it as de-centralized is the "total awesomeness".
Clearly, you have strong feelings about this, as you are working on tent. So my question is, have you asked yourself if there are cases where centralization is better ?