Investing to Save Lives

I understand that donating can save lives in developing countries, perhaps as low as hundreds of dollars per life saved.

If that’s true, is the limiting factor really getting enough funding, or is it something else like logistically getting vitamins, anti-mosquito nets, etc to the people?

And if funding really is a limiting factor, why isn’t there an investment organization that one could buy bonds from, which would then save people’s lives as a loan, and ask them to repay it back over a medium term time frame? I know that labor in developing countries is poorly compensated, but if the cost to save a life is really just hundreds of dollars, then surely the labor could pay that back profitably over some time frame?

Is there something like this already?