That's more of a case of 'convergence' (handycam + phone + still picture camera) than one of transition, but yes, mobile devices have traditionally been much better at creating video and pictorial content because they can move to the scene rather than to have the scene move to them, but this has been true since the 'camera obscura' (literally: dark room) has gone out of fashion.
Good point, but that's mostly raw data capture. Sooner or later you'll want to sit down and edit it. Equally, they make great dictaphones, but you're not going to record a band with it.