As the founder of a startup, I am probably the last person you'd expect to tell you that scale matters. And to be sure, there's plenty of innovation coming from small, nimble companies that nonetheless are able to disrupt huge markets.
However, with Facebook's recent addition of voice calling to its Messenger app, the company is poised to demonstrate to the mobile industry the benefits – and power – of scale, first hand.
Do individuals really put their real life phone number on their Facebook page? Maybe I'm just not comfortable with this but I do see Facebook entering the phone market via app!