The imperial core will be the last to revolt properly. Its inhabitants are too comfortable and chauvinistic to want the actual change that global equality would need. As long as the new system doesn't radically change their view on exploitation the western left will at best achieve national socialism. The western hegemonial structures need to be crushed first if the capital R Revolution is to come. Western leftists at large have neither the power nor the intention to tear down these systems as that would mean that their own living standards would deteriorate in the short term.