Xbox One is going to be advertised and promoted to hundreds of millions of people this year, every time they turn their PC on

[S.T.A.G.E.]

There wont be a difference. If it does color me surprised. Its mainly Xbox fans who will buy into the Xbox app because people associate the name Xbox with videogames. Most people trust Apple and Google Plus as a central purchasing hubs on tablets and phones. On PC they use various other resources because your opens are open. Internet Explorer has tons of exposure when you buy standard laptop that isnt Apple. Fact is, people more often than not opt away from IE. Even my family members who use IE don't even know what Bing is either.