@deivudesu around 60-70% of pollution emissions ultimately stem from household purchasing.
I personally think carbon footprint calculators can be an interesting project for wealthier people to do.
Footorints scale with wealth and its mostly the people flying regularly, driving large vehicles, or buying large hard to heat or cool buildings who are causing most of the pollution and are in the position to alter their lifestyle to be less polluting.
Also posibley the most effective policy to reduce emissions might be to bring back those 70 to 90% tax rates on the richest