The Broken Food System Costs $12.7T a Year

I don't see anything in the article backing the big claim in the title. The paragraph below is about alleged fairness, not efficiency.

'These hidden costs can be interconnected. Laborde offered the example of cacao—the key ingredient in chocolate. Cacao is mostly grown in Ghana and Côte d’Ivoire, where farmers are often paid a pittance for their crops. That cacao is mostly eaten by people in high-income countries, particularly in Europe, and usually in the form of sugar-laden chocolate bars. If people in Europe ate a little less chocolate but paid more for a fairer and higher-quality product, that could help reduce health impacts in Europe while directing more money toward farmers in West Africa, Laborde says.'