Social impact of the donations of the 10 richest people in the world—very shallow analysis

Summary

  • Very tentatively, I estimate:

    • Jeff Bezos and Elon Musk are the 2 people among the 10 richest in the world whose donations have achieved the most social impact.

    • The social impact of the donations of the 10 richest people in the world is equivalent to donating 172 M$ to the Longtermism Fund.

  • This analysis is very (too?) shallow. I encourage you to get in touch with Elliot Olds in case you would like to be involved in the project proposed here.

Methods

I have collected 65 donations made by the 10 richest people in the world, on 25 December 2022 according to this page from Forbes. I used the following sources, which I last checked on 25 December 2022:

I have included donations made together with partners, but excluded pledges. For the Wikipedia pages, I disregarded donations whose specific year or amount was unclear.

I set the cost-effectiveness of the donations in terms of increasing the expected value of the future. I only defined non-null values for those to:

I assumed null cost-effectiveness for the other donations due to very tentatively thinking they are neither robustly beneficial nor harmful. Feel free to check this post to get a sense of why I think this also applies to donations in the area of global health and development.

Results

The table below contains the amount, social impact, and cost-effectiveness of the donations I collected, listed by descending social impact[1]. The calculations and data are in this Sheet.

Donor

Donations (G$)

Social impact (bp)

Cost-effectiveness (bp/​G$)

Jeff Bezos

10.3

0.640

0.0620

Elon Musk

5.82

0.0395

0.00679

Bill Gates

20.4

0

0

Carlos Slim Helu & family

8.00

0

0

Warren Buffett

1.08

0

0

Steve Ballmer

0.728

0

0

Larry Ellison

0.0316

0

0

Gautam Adani & family

0.0138

0

0

Bernard Arnault & family

0

0

ND

Mukesh Ambani

0

0

ND

Discussion

Jeff Bezos and Elon Musk top the list. This is in agreement with my prior expectations. However, the present analysis is very (too?) shallow:

  • My data are very incomplete. For example:

    • Forbes claims here that:

      • Bill Gates has donated 33.4 G$, but only 67.1 % (= 20.4/​33.4) of this was captured in the sources I have used.

      • Warren Buffet has donated 46.1 G$, but only 2.33 % (= 1.08/​33.4) of this was captured in the sources I have used.

    • This article from The Art Newspaper suggests Bernard Arnault donated 0.2 G$ to Fondation Notre Dame.

  • My cost-effectiveness estimates have very low resilience:

    • I only spent about 5 s setting the cost-effectiveness of each donation, guessing it based solely on the name of the recipient.

    • So I assumed the cost-effectiveness to be null whenever it was not obviously net positive or negative from my very quick impression.

The social impact of 0.680 bp I estimated for the donations of the 10 richest people in the world is equivalent to donating 172 M$ (= 0.680/​3.95*10^3) to the Longtermism Fund, supposing its cost-effectiveness is 3.95 bp/​G$ as I estimated here for the spending of the effective altruism community on longtermism and catastrophic risk prevention.

Another shallow analysis was published here by Nuño Sempere, and a proposal for a more detailed one was presented here by Elliot Olds.

  1. ^

    In case of null social impact, I listed the names by descending amount donated. If this was also null, I listed the names alphabetically. ND stands for not defined.