I'm not sure that the survival of Facebook or Twitter or YouTube is in anyone's interest. These 3 websites have managed to take what used to be a wide and diverse internet nearly free from censorship...and funnel 99% of traffic and attention through these portals, which they now govern according on their own agendas. We've gotten to a point now where these sites are the Internet, and they take on the role of controlling what people can or cannot see. They can manipulate any content to appear popular or unpopular, agreeable or disagreeable. No one can have any concept of what is really true or untrue when it is entirely agenda driven.
I see no downside in all 3 of these entities disappearing, and I also see no chance of that ever happening. No one gives up that kind of power easily.