I think you give Facebook too much credit for repositioning themselves. Facebook and the news feed was a natural product for mobile. There was no pivot at all.

I think you give Facebook too much credit for repositioning themselves. Facebook and the news feed was a natural product for mobile. There was no pivot at all. They merely saw where user attention was going and built for that surface. I would argue they got off track by building for mobile "web" and thinking native APIs weren't important. Then they course corrected. But I think the miss here is that social connectivity was a new thing happening to software and they could have made a strong play to influence the direction of the mobile OS. They don't have much leverage now.