This war is more idealism (aka scoring grudges against DH) than realpolitik. Half of the alliances on Equilibrium side can simply avoid this war, since the original CB had nothing to do with them, and yet gain from its result. The fact that so many disparate alliances banded together against a common foe shows how much tension was built up against DH.
MK, Umbrella, TOP, etc. have much less support now than what NPO had in 2008.