I would be very interested to see what others think but I think some reasons as to why there is a disconnect between future food projections and actually implementing a preventative response are perhaps due to:
1. Timing: the time it takes for governments/agencies/responders to understand the information, design preventative measures and then get funding may take a number of months by which point the window of opportunity has sadly dwindled.
2. Conflict: It seems a large portion of the countries facing crisis are also affected by conflict which, because of it’s unpredictable nature and negative impact on food access can be difficult for communities/agencies to plan/prepare against. e.g. one preventative response could be ensuring that an area which is not being affected and has high levels of food production can transport to an area in need – but where conflict affects this transportation ability this preventative measure will be ineffective.
3. Complexity: the countries/communities facing high food insecurity and requiring preventive responses on the ground often have very low resilience in the first place, and many things affecting their food security e.g. it often isn’t just a matter of lack of availability of food but also access (maybe due to conflict, or poor transportation / road to markets), as well as poor ability to access and process food with the necessary nutritional value.