Controlling valuable pillars of internet utility -- the flow of information, social connections, music and video delivery -- has created tremendous wealth for a few while very little for stakeholders not on the company’s cap table.
And finally, adding the personalized Newsfeed was the killer app that FB needed to truly become endemic. This transformed the platform into the perfect dopamine storm; users logged in and experienced the optimal confluence of a social inbox + voyeurism + curated news + validation