I know this goes against the prevailing wisdom, and i'm pretty indifferent to the systems (I have an android phone, ipad, and windows 7 pc), but I honestly think Microsoft is going to clean up big time with windows 8, and going forward with future versions. Sure the surface might not do much, and RT might crash and burn with the new intel powered windows 8 tablets, but microsoft as a whole seems poised to make terrific gains. Watching some of the videos of these forthcoming win 8 intel tablets, I can't help but see a situation where tablets really *can* replace a desktop, or laptop. A docking station, a hdmi port, and you've got your desktop with standard windows, running all your legacy apps you're used to, that you can pick up and go sit on the couch with. The way I see people switching over to the desktop mode in any videos (which is ugly and wonky on a touch screen device no doubt) from the metro side, seems a lot a sort of 'command line' mode for people who grew up on only GUI systems.
So yeah, I think RT will flop, but i think microsoft, being the first to truly integrate a full complete desktop experience without limitations, and a very useable touchscreen experience, will swoop in, at least by windows 9 and capture the lions share of the tablet market. Is that such a stretch? They're already getting started leveraging that 90% stake on the desktop that everyone and their grandmother is used to, to the tablet market. ...And they are the only ones. Every other tablet is supplemental, supplemental to your laptop, or desktop, because you *cant* do everything yet on them, they're still media consuming devices with strict limitations. But windows 8 (and forward) on intel CAN be that replacement.
Heck I know how fucking shilly towards microsoft all that sounds, but if i had to put money down, thats what I can see happening. It just makes sense.