yes, run Windows, but I'm not talking about running RT programs. I'm talking PC programs and games. That is the end goal, is it not? People that really enjoy gaming, do not want to be stuck with mobile games for years, just like with desktops we expect generations leaps in graphics every year or two. Doesn't have to be limited to games. What about running a media server to your TV. How do you think our little CPU's and GPU's can stream and transcode HD video and audio? Sure, there are ALOT of things current hardware is sufficient for, but there's equal tasks its not sufficient for, like I mentioned above. If your just gonna browse the internet and play solitaire, you probably haven't needed to upgrade in 10 years, ya know?
I'd love to have my phone act as a media server to my TV/Roku. Then I wouldn't have to consider adding a dedicated Ubuntu PC running XBMC along side. I don't want my gaming rig doing this 24/7.
There is just a ton of things people use PC's for that some people don't even think of. The technology in mobile devices today isn't even close to being sufficient for all of it. I'll put my "old" core 2 Quad Q6700, nVidia GTX560OC against a SoC 800 any day for pure computing power. Beyond that, the only reason that equipment is still managing today's PC games at 1080p is because both my CPU and GPU are overclocked, massively in the case of the CPU (2.66GHz to 3.7GHz).