For example, that inequality of asset ownership leads to social decay. That there is even actually social decay or real instability in America.
One thing missed by in the treatise and a lot of comments, is that 'consumption' is somehow tantamount to 'resource utilisation'. Obviously, there is a correlation. But a considerable amount of what we 'consume' does not entail necessarily excessive resource consumption. Plastics, electronics doesn't eat up a lot of 'resources', though some parts perhaps more than others i.e. 'alkaline batteries'. Huge swaths of our consumption aren't even related to resources: entertainment, video games, software, social networks etc..
If they are really smart, they would take some time to decouple the 'resource intensive' aspects of consumption, with those that are not, and help industry to optimise along those lines.