Targeting determines features, not the other way around.
And is embedded inside consumer Gmail, and included by default on every Android phone I've seen since it replaced Google Talk or GChat or whatever it replaced. It's the default SMS app on a lot of Android devices. What's enterprise about it?
Hangouts has since been replaced by Messages as Google's primary Android SMS app, and by Allo as its primary Android internet-based text chat app, and by Duo as its primary Android video-call app.
You don't build a video calling tool and then look for a potential segment to sell it to, you define/find a segment and then build the product with the features required to target that segment.
