"sextrainglue yeah, because a woman being charged for parking when buying formula in the UK is definitely going to have an impact on breastfeeding rates in rural Africa hmm"
I think you've missed the point.
A global ban on promotion does appear to have made a difference. And that it is global is part of the reason why it's successful.
It's a 'all together" measure, rather than a 'do as I say, not do as I do'.
So yes, no promotions = no promotions