Nearly 90 years after Simon Kuznets first introduced Gross Domestic Product (GDP) for the limited purpose of measuring economic growth (by measuring the monetary value of all local goods and services within a given period of time), calls continue to mount for decision-makers to stop using GDP and its derivate, Gross National Income (GNI), for purposes far beyond their original design. This is particularly true in the case of the development assistance architecture, where these indicators are used as proxies to measure a nation’s overall well-being and, in some cases, eligibility for external funding. The GNI-based classification system has recently even been suggested by some Member States as a criterion to access to medicines in the new WHO Pandemic Agreement.