Sad to see, but not surprising. Rage had some great tech behind it [when it worked right], but the game had problem with lack of focus and direction [open world? didn't work. vehicles? no real point. multiplayer? derp]. Bethesda will probably have to clean house and, unfortunately, they could mean some top people getting shoved aside.
And chain Carmack to his desk until he finish a new, awesome engine that's awesome.