If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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Gnon is reality, with an emphasis towards the aspects of reality which have important social consequences. When you build an airplane and fuck up the wing design, Gnon is the guy who swats it down. When you adopt a pacifist philosophy and abolish your military, Gnon is the guy who invades your country. When you are a crustacean struggling to survive in the ocean floor, Gnon is the guy who turns you into a crab.
Basically, reality has mathematical, physical, biological, economical, sociological, and game-theoretical laws. We anthropomorphize those laws as Gnon.
Thanks, your answer together with Toggle's clarified things considerably.
(Also, that crab thing is fascinating.)