Facebook's success was its real names policy & emphasis on friends. What can be simpler than using real names to connect with your friends instead of arbitrary

Facebook's success was its real names policy & emphasis on friends. What can be simpler than using real names to connect with your friends instead of arbitrary usernames? This created strong network effects, accelerated by seeding in universities (places with lots of friends). The tech stuff allowed them to maintain their platform, it didn't differentiate the fundamental proposition.