Competition:
Google, Apple, Facebook, and Amazon are at each other’s throats in all sorts of ways. What (business models, products, and services) do they compete on, and how do they compare? How this competition has evolved over time? Where is it now? Who is the winner? How is the future going to hold for these companies? Can you speculate who will be the winner? What is disruptive innovation and how are these businesses dealing with it?