Possibly, but it's not really relevant.
I would liken the gaming PC to an audiophile hi-fi setup, almost no one expects it to fit in a messenger bag and run off a battery. For the connoisseur, no portable setup will fulfill all of their needs, and in all likelihood, they'll have setups to cater to each use case. But what if you can have a machine that's ultra-portable, but could also be docked to a setup that allows for high frame rate/high res gameplay? Some people already do this on laptops with express card bridges to external PCI-E sockets. Works pretty well. Here's an example of one such build, although I've seen better:
http://www.techradar.com/news/computing-components/graphics-...