To prevent planetary disaster we must reduce consumption of materials and energy. There is a certain amount needed for life, but then there is the great excess of wants manufactured by advertising. Can we turn around the propaganda machine to make a simpler lifestyle socially desirable, and overindulgence vulgar? It was tried (successfully?) before with Make Do and Mend, and that was for a less deadly cause. Maybe wartime spirit could be invoked as a saving grace of British culture.
cf. subvertising, tobacco advertising bans.