Did Facebook ever consider building out their video product outside the newsfeed to keep people on the platform? YouTube seems like easy prey with FB's reach.
If you're asking if they'll make a social network with video... They already have. It's Facebook. And they've recently begun pushing live video a lot harder.
That's not "shareable"? That seems like exactly what the shareable web ought to be!
I don't disagree that youtube is just as easy to use, but that doesn't change what Facebook has that youtube doesn't.