i thing Yes. Facebook is no longer cool. Most young people have already moved on to messaging apps like whatsapp. Unfortunately for those hoping to beat Facebook, Facebook has enormous money and ends up buying whatever it feels threatens its hegemony over the hearts and minds of young users, as seen with their purchase of Instagram, Whatsapp and Oculus rift. IMHO, all it would take to beat Facebook is for the next Kevin Systrom or Jan Koum to resist Facebook's financial might and we shall have the next big thing.
The next thing to overtake Facebook would be a site which is:
1.Decentralized (ETHEREUM)
2.Search the world beyond people you know and into the world of the unknown
3.Public|Private Content Settings
4.Selective Profiles & Posts (Interests such as Business, Friends, Family, etc.)
5.Users would have ownership of ad spaces and content creation