I want to believe that more and more people value privacy and social networks will more and more be like private chat rooms again. Slack/Discord/Wechat/Telegram and soon Hangout again are the best examples.
I believe it will die down in order to make place for more decentralised approaches for connections are not a visible public reference.
Any social graph could be the religion registers back i the nazi days all over again.
Privacy is getting more important even for the non it individuals.
People in highly connected points of social graphs provide a valuable service to society, and are using technology to monetize on their contribution. The people are a mix between a tribe leader and a thought leader. They bring people together and help spread ideas. Even in a very monetized network, Youtube, experts believe Influencers receive less compensation than they would with similar audiences in the old media [1]. This undervalue suggests a market imbalance that should correct it self with time. As more money comes into the field the competition will increase and the quality of the product will increase. That is why I think social graphs will become more and more important.
[1]https://www.forbes.com/sites/michaelthomsen/2015/07/11/pewdi...