There is definitely an air of the beginning of the end for Facebook, not just because of the high profile data mining that took place, but the fact there is no monetisation for content in respect to FB, Twitter, etc.  There are still high numbers of the population that are completely unaware of Steemit and even the concept of reward for content.  I believe that a merger of some sort could take place between FB and a trusted blockchain/decentralised platform.  This way, all FB users could be introduced to the monetisation concept, without having to leave the bubble, so to speak.