Microsoft has long been willing to sink money into the Xbox, so I don't see it going anywhere. This is more of a pet project for them, giving them a cool brand and face that they'd otherwise very much lack.
I think only is the likeliest to pull out, but the ps4 is proving so successful that I don't see any of the three leaving anytime soon. At the very least they'll use the Playstation brand for some streaming device.







