Except that mobile gaming is a completely different beast from living room or PC gaming. Mobile gaming is about quick bites, simple controls, and shallow gameplay (this isn't a bad thing, per se). Mobile gaming is casual, by default. Its hard to get into an epic RPG while on the bus, or in the dentist's office. If I'm going to play something like Skyrim, I'm going to do it in a comfy chair, on a good screen, with mature controls.
Tethering a controller to your phone or tab is counterproductive, since you "un-mobiled" mobile gaming, by forcing someone to carry around a controller as well as their device.
Mobile isn't replacing anything, I wish that fallacy would die. Mobile is supplementing a certain part of traditional markets, but it isn't replacing the core of those markets. Looking at console and traditional game sales back this up, they aren't slowing down in relation to rise in mobile device sales. Nor will they, since they fill a very different niche than traditional consoles and PCs for gaming.
Same with the stupid trope that mobile will magically kill traditional PCs... This is said by people who never used their PC for anything more serious than email and light web browsing. There is very little in my daily computer tasks that can be moved to mobile, outside of light email and web duties. Sure, this is a gap MS is targeting (badly) with the Surface Pro, but suddenly we're not talking mobile anymore, but a traditional laptop with a floppy keyboard and optional touch controls. And still it isn't going to be as good as my large screen for most tasks.
The living room died so many decades ago
I'm now picturing a family of four huddled in their backyard streaming watching movies on a 10" tablet. I feel kind of bad for them, since they could be inside, sitting in their living room watching it on an increasingly affordable giant HDTV.