This document discusses why democratic socialism has failed to materialize despite attempts. It argues that the complex, hierarchical nature of industrial societies powered by fossil fuels is inherently resistant to bottom-up, democratic control and management. Multiple explanations are examined for why revolutions and reforms failed to establish worker-run socialism, but the most comprehensive is that large-scale industrialism is structurally incompatible with nationally confined economic democracy. History shows it fosters corporatist or statist systems rather than genuine democratic socialism.