Considering how long Facebook dragged its feet to get into mobile in the first place, the data suggests they will be exactly as slow to change as Google was to social. Does the Instagram acquisition change that? Not really, in my view. It shows they’re really fearful of being displaced by a mobile upstart. However, why would bolting on a mobile app to a Web 2.0 platform (and a very good one at that) change any of the underlying dynamics we’re discussing here? I doubt it.