Well John, some people would stop mid shag and reevaluate. Enough of them? Probably not but it's better than sitting on your butt ranting about it. And you are absolutely right in that people in the developed world (aka rich enough) do consume more and emit more carbon. A change in lifestyle is in order. The problem is the developing world wants to emulate the developed. China should've stayed with the bicycle tranport of the pre 80s era. We have to stop specializing our equipment. In the 80s as a teen, I had a pair of shoes for sports, trainers, which also double dutied as my casual sneaks! In the 90s, I had one for each sport (4), 3 for running in different terrains etc. We've been programmed to want more like sheep!
Fortunately , it's bad economic times that people consume less. However, there are enough people with the resources as a market that slowdowns almost don't matter.
Bleak but the good news is it is possible to change.