Via Gamespot
His quoting can be seen below with highlights:
I am really looking forward to learning on mobile. The truth of the matter is, if you're going to continue to be relevant in gaming at a global scale, you're going to have to find a way to be relevant on the largest platform, which is mobile.
It's critical for us to deliver on the full promise of over 3 billion people playing video games; the opportunity to reach more and more people. People who only play on their phone, find Xbox to be something that's interesting for them
It doesn't mean I want to turn all of our franchises into mobile franchises; it doesn't mean everything is going to go free-to-play. I think the distribution and business model diversity that we have is a strength of the platform.
Microsoft sells games outright; it also has the popular subscription program Game Pass; and it operates free-to-play games. With the acquisition of ABK, Microsoft also pushes further into the mobile game space and the potential riches there.
We've got to be relevant on mobile. There is no way to plot the future without being on the platform that most of the planet plays on.