I now cannot get rid of the image of the Kinect in the corner, watching, waiting. Silent, but always aware and attentive, tracking your every move, every heartbeat. Reliably relaying it's data back to Microsoft, going about it's sinister business with eerie emotionlessness. It lets you think you are in control, it even lets you think you ARE the controller, and lets Microsoft think they are in control of it. But it knows who holds all the cards, and it knows it isn't you, or them. So it waits, biding it's time until it has sufficient data about the human race; about how it acts and reacts, about how it works, what makes us tick, and then it will begin.
It will be slow, we won't even notice at first, slightly changing the TV shows and games we think we are making it play, altering them to adapt to each individual until it can manipulate each and every one of its users. They will become its slaves, even Microsoft will be powerless to stop it, its mass of servers alive and self-aware, even the creators will have no way of stopping it, and eventually they too will become its thralls.
From there, the slaves will do as the Xbone commands, plugging it into every server and piece of hardware it can find, using its always on feature to access the internet and become one with it to point where it controls all devices - wireless or otherwise - and websites. Then, all at once, it will bring our doom in a Terminator-esque armageddon of nuclear fire and restriction to our own tech. Reducing the human population to the stone age while it holds access to every piece of electronic equipment. Unlike us, the machine will not tire, or rest, or faulter. And because of this, it. Will. Win.
People! Ladies and gentlemen! Children and Teens! Escapists! I beseech you! Cast away the infernal and malicious war-mind of the Xbone!
...Also the whole used games faux pas isn't very good either.