I must, respectfully, disagree, for two reasons.
First, ACKS does not require that Law and Chaos are cosmic forces; it merely demands that they be world-historical forces. I have written elsewhere that in World War II, one can equate the Allies to Law and the Axis to Chaos. I’ve re-pasted the alignment text from ACKS below.
Second, The Song of Ice and Fire was one of the very inspirations for my presentation of Law and Chaos in ACKS! And the story line for ASOIAF is the very model I use for my Auran Empire campaigns (where the political struggle of Lawful and Neutral leadership distracts them from the looming Chaotic threat).
Please note that I’m not arguing that GRRM intended to present his setting as one where Law and Chaos are in opposition, merely that it is easy to apply that framework to it.
In the Adventurer Conqueror King System, your character will enter a world of ceaseless violent struggle, where civilization is ever-assailed by forces intent on its destruction. In this perilous realm, he will be called to choose a side: Will he pledge to defend civilization and its allies against those who seek to destroy it? Will he sell his sword to any who can offer fame or fortune? Or will he become an agent of entropy and destruction undermining peace and order? This choice is called Alignment, and the three choices are Lawful, Neutral, and Chaotic.
Law: Lawful beings believe that civilization is worth fighting for.
Neutrality: Neutral beings generally enjoy the benefits of law and civilization, but it is not something they directly fight for.
Chaos: Chaotic beings actively seek to destroy civil society. Chaotic characters are often madmen or cultists of forgotten, chthonic gods. To the extent they have any order at all, societies of Chaotic characters are ruled by force and fear, and are often characterized by all manner of corruption and vice.
Moreover, the Night’s Watch - filled with scum and criminals, yet nevertheless defenders of civilization - were the literal inspiration for this text:
Note that a character’s choice of Alignment doesn’t determine whether or not he takes care of his children, cheats on his wife, or steals from the merchant’s guild. It is concerned only with the weighty issue of where his allegiance lies in the grand struggles of existence. To have an alignment of Lawful or Chaotic is to have chosen a side in this perpetual struggle. Many people, choosing no side, are Neutral, although it is important to remember that most Neutrals still want the protection of Law even though they are not willing to die for it. (To paraphrase George Orwell, Neutral humans sleep peaceably in their beds at night only because Lawful heroes stand ready to do violence on their behalf.)