Are you sure?
Xbox One? Doesnt get much more simple than that. Last time i looked four was bigger than one. I know MS tried to convey a message. How this turned is a story told many times. A tragic tale of betrayal and foolhardiness.
Not doing a great job... is putting it mildly. I mean, when hearing "Xbox1" no none gamer folk would think "oh its Microsoft All in One multimedia thingy". People like to point at Nintendos WiiU for bad marketing, attributing the name it was given. What about Microsoft and their Xbox1?
It will get even more confusing.
XBox One is definitely not an example of simple numbering. It's their third console. So, if they followed the PS model, it would be the XBox 3.