If this isn't a message to start going PC then I don't know what is.
It's certainly a start, but the start up costs for a legitimate PC gaming rig are a lot more than that of an Xbox or a Playstation. How robust is the secondhand software market anyway? I don't see many computer games at secondhand stores.
I'm probably a minority (although apparently exactly the kind of consumer Microsoft really wants) in that I use my xbox for a lot of things besides gaming, things I'd rather not use a PC for.