Google really has nailed usability with Duo. It's clean and fast and easy to use. The potential is there. If I was optimistic, I'd say their strategy will be to force their way into the market by integrating it into the OS via Contacts or maybe even lower.

Of course Hangouts had potential too. And then Slack came along and ate their lunch on the business side. It's really kind of ridiculous that every single organization that I know of that uses Google Apps has decided to ignore Hangouts and use Slack instead. How shitty must your free group chat client be that your customers are paying to replace it...

I feel like Google is my corporate spirit animal because we operate the exact same why. We both like to start super cool side projects, get 70% of the way through it and then just completely lose interest.