Facebook will not die in the short-term. The problem here is what is the world getting done on Facebook right now, and do better alternatives currently exist? For stuff like news and informative videos, better alternatives to Facebook certainly exist. But for stuff like online mobile social games, a true challenger to replace Facebook hasn't shown up yet. I've gone through too many games on my iPad that have constantly urged me to link up with my Facebook account. As long as games (or any other category of stuff that might be on Facebook) rely on Facebook account linking as a crutch, Facebook won't be going anywhere. Now if these big companies can be convinced to have people link to their STEEM-based accounts instead of Facebook, then society might be able to advance on the path to killing off Facebook.