Isn't the current Xbox a PC, only in a custom box? I seem to remember that it's full of PC parts and every time they release one all the sites go crazy talking about the parts in it.. If anything the OG Xbox had complaints of people somehow bothered it was more a PC than the other consoles. MS also combined their app stores into one, so I'm not too sure what else they need to be a PC.. keyboard and mouse.. wait.. you can do that now..
People have been saying that the Xbox loses money for as far back as I can remember paying attention to it. I've never understood why people obsess over this, but regardless if that was a sign of MS killing the platform off then it would have been done long ago. As long as Devs are pushing boundaries of hardware limits there will always be consoles to play it on. I can't ever imaging the 'hardcore' gamers (I hate this term, but alas it's the best way to identify those I speak of) ever accepting lower graphics and lighter games.
This is like the Ouya, and countless other things were going to kill off the Xbox. While I am openminded enough to say 'maybe' I highly doubt it'll be anytime in the next few console cycles.. if anything we'll probably get more minor refreshes like the Xbox One X to Xbox Series X.