I've heard the reason for the name of XBox 360's successor was that some marketing geniuses heard that most people called it "the three-sixty" for short, and thought "Great! Let's call this the XBox One, and it will be referred to as The One! Like Neo!!"

And then, everyone collectively agreed on "XBone" 🦴

So the Xbox 720 is twice as good as the one before it, but the 900 only gives you a 25% increase? Who'd buy that garbage?