[Question] Why don’t billionaires fund more towards highly cost-effective charities?

  • On GiveWell’s Top Charities page are several charities with average cost-effectiveness of $5,000-$6,000 marginal expenditure per life saved.

  • The world we live in is one of extreme wealth inequality. It is hard to imagine.

  • Some of the ultra wealthy donate some of their wealth, as do some regular people.

  • I can imagine a world where all of the signers of the Giving Pledge might want to donate 1-2% of their wealth each year, which should still allow their wealth to increase even, while also saturating the most cost-effective charitable opportunities for saving lives.

If this were the case, I would expect to see the most cost-effective cases saturated (leading to reduced marginal cost-effectiveness), but with tremendous improvement reducing child mortality globally. But that apparently hasn’t happened, when looking at the income for those charities.

Are the Giving What We Can people just a ‘different breed’ from the Giving Pledge people? If it is as it seems, why isn’t more word-space and cultural pressure put to trying to prevent many easily preventable child deaths via additional billionaire giving? Or is the $5,000-6,000 figure is now out of date, and the marginal cost of life-saving actually is actually considerably more expensive than that?

I’m completely befuddled, what have I missed? Thanks