We see the same thing in other areas. Rich people have more opportunity to make foolish purchases but are less likely to do so.The common factor here is mindfulness. The wealthy go through life making conscious decisions while the poor seem to believe that their actions are not in their own control.
Getting thin develops willpower. This is nothing more than doing what one intends to do and is the foundation of all achievement. It is not something we are born with but something we earn through sweat.
The photographs are from Oxford. On a side note, the medieval street plan tends to encourage weight loss as it encourages walking. Modern planning tends to encourage car use.
Wealthy people are more aware of what they put in their mouths in the same way they are more aware of where their money goes. One reason I remain poor is that I still look back over my past actions and wonder what I was thinking at the time (not much- I was on auto pilot.) This is also the reason I am fat.
The Slow Diet is 'slow' because weight loss is not the main aim. The real aim is to develop the mental habits of wealthy, thin people. Once this is done the weight will handle itself.