I think is the natural choice. Their social network "Google+" failed, they are now implementing live streaming for games (after laughing about Twitch[1]) and already offer live hangouts. I'm sure the next step is to use Youtube ala Periscope/Meerkat, maybe with a standalone app. If they want to keep their influencers and Youtube pros they should offer this functionality to them but Facebook is ahead now.
[1]https://twitter.com/justinkan/status/580524413604478976