In a post-server era where the cost of computation, storage, and transfer nears zero, economic value is no longer defined by energy or ownership, but by structural alignment with desirable futures. This paper proposes the K-Structural Economy, where value is measured by a future-consistency metric K = Ψ. It also argues that AI-powered predictive infrastructure will render nuclear deterrence obsolete, shifting the paradigm from destructive power to structural foresight. Through theoretical modeling, visual data, and economic analogies, we map the architecture of a future where cost collapses and predictive structure becomes currency.