I'm glad you brought that up because it ties into this next point: Microsoft wouldn't keep Xbox as it is today, if they decided to keep it around.
My thinking is, they would completely shift the model. They would not even market it as a console anymore but more like a gaming-centric NUC mini-PC. So they would be able to price the hardware to where it makes a profit off hardware sales, and merge the Xbox hardware team with Surface (IIRC the Surface team were involved in the development of the new consoles anyway so it's not exactly out of left-field for them).
Doing that would let MS do two things: one is actually sell Xbox hardware at a profit. The second is, they'd have an excuse to cut down on the total volume of Xboxes manufactured. They wouldn't need to sell 50 or 60 million Xboxes a generation to make it work; they could make like 2-5 million Xbox devices a "generation", keeping in mind something like GPU generations, then phase those out and make newer models two years later. As-is they're going to have a very difficult time making new Xbox systems in this "Series" moniker but if they operated it more like a mini-PC business line they'd be able to justify that and also make good on one of the appeals of their All-Access program.
But to move Xbox in that direction, Microsoft would have to actually make it capable of running full-on Windows. No gimped features, no roadblocks, no barriers. You run Windows on Xbox the same way you can on any other PC device. That means they can't prevent users from using Steam, EGS, GOG etc. on Xbox systems anymore, either. That would naturally create even more a reason to make their internal games truly multiplat, so no more stuff like locking Starfield or TES6 as Xbox console-exclusives because Xbox would no longer "
be" a console with this approach.
I mean if you think about it, one of the pushes people in the community have made for the Series S and X are actually them being emulation systems; that's something typically reserved for PCs. And MVG put up this video just today:
More than any other console, Xbox Series practically are "just" PCs in a console-style form factor box. The only thing preventing them from running full-on Windows is Microsoft still wanting to run the console side on the traditional console business model. But IMO, that is what's holding Xbox back from having its own actually unique identity amid the current market.
I don't trust MS to be able to compete with Sony even if they get ABK; they've just had too many times now to show they can't really "get" this traditional console business model to work for them, when companies much smaller than them have succeeded. Maybe it's just not in Microsoft's corporate DNA to exist in gaming in that capacity, but IMO that doesn't mean they can't still be a platform holder. They already are: with Windows. Why not just shift Xbox to serve the needs of Windows more directly, and have the Surface team handle the hardware side of things like they already kind of did for Series S & X?
Besides, you already highlighted how even during the end of 360 gen, no one wanted to buy the Xbox division and that is with what I'm presuming was the software side too and maybe owned IP? So whatever Samsung, EA & that 3rd company didn't like at that time, there's going to be magnitudes more of that unfavorable stuff for any company looking to buy Xbox today, especially if it's just the hardware side. No one will want to buy a divested Xbox hardware unit. But I think Microsoft could do more with it as a mini-PC NUC-style gaming brand device than simply shutting the hardware down altogether, IMO.
I honestly can't see any of them being interested in buying a hardware-only divested Xbox division. Maybe desirability shoots up if it includes studios and IP, but that's a lot of potential revenue & profit Microsoft would be giving up.
Just hardware-only, only Tencent would probably be seriously interested. Amazon less so, but still on the radar. Apple wouldn't give a shit, TBH. If it included the studios and IP, all three would be a lot more interested, particularly Tencent & Amazon; Apple would probably only want the studios & IP and either not want the hardware or, if forced to buy to get what they really want, immediately shutter or spin off the hardware to some random company.
But really this is all theory-crafting if things play out to where MS doesn't acquire ABK. I think even if they do acquire them, though, they may make some big changes to the Xbox division and still pivot to acting more as an actual 3P publisher; how else is Xbox as a division ever going to realistically make up for $150+ billion in sunk costs & losses in any realistic lifetime?