The cotton gin eradicated lots of diseases. If you think that the battery I describe wouldn't have a similar impact on developing economies, you're experiencing a bit of an imagination failure.
I just used batteries as an example. The money being poured into batteries is commensurate with the overall value to society of creating them. This is not a market failure. The reason money isn't flowing to malaria prevention is because the structural problems that lead to the disease prevent the resulting human capital from having much of any economic value.
I just used batteries as an example. The money being poured into batteries is commensurate with the overall value to society of creating them. This is not a market failure. The reason money isn't flowing to malaria prevention is because the structural problems that lead to the disease prevent the resulting human capital from having much of any economic value.