Your article made me think of the famous deworming study in Kenya which seemed to have educational benefits which would be hard to achieve as effectively with any investment in the education sector (some of which have proven to have little or no impact at all!).
It should be possible for Presidents, Ministries of Planning and Finance, and international donors - particularly the World Bank - to ensure that such research findings are reflected in appropriate resource allocation and investment decisions.
Would it be possible to track your thesis in terms of whether studies on impacts "within the silo" are having more impact on resource allocations than impact studies "outside the silo"? Might take a lot of effort to do that rigorously.