

I think it mostly comes through very wealthy patrons, less from Effective Altruists like Zhang who they persuaded to “earn to give” at the start of their careers (although they hope all their friends at AI startups will donate their shares to the cause). Most of those billionaires were in the software industry before 2008.
- Jaan Tallinn of Skype and Kazaa
- Peter Thiel
- Dustin Moskovitz (turned off the taps a few years ago)
- Elon Musk
- Sam Bankman-Fried (oops)
- some crypto speculator
- Mark Zuckerberg (on the edge)
- Jeff Bezos (on the edge)
- Eric Schmidt (the thing with Zhang is the first I can recall)
- James McClave and his BEMC foundation who funded a whole EA propaganda outlet at Vox
Small donors to EA orgs don’t always know the money will pay Yud $600,000 a year to think great thoughts, or Nonlinear Fund to be digital nomads with a live-in servant, or the European EAs to buy a Czech castle to hold retreats. I have not looked into who funds Effective Altruism after FTX went bankrupt but the pledge drives always have matching donations from a foundation with a billionaire patron.
And then the people who receive the benefits and earn hundreds of thousands a year pass on $50-100k at a time to their friends.

This blog post talks about who funds one EA organization. https://rufuspollock.substack.com/p/what-lightcone-infrastructures-financial. Note that all the foundations like OpenPhil (Moskovitz) and SFF (Tallinn) which are mostly a way to distribute one patron’s funds have well-paid senior staff. They are not squeamish about letting a former CFAR board member join the grants committee that votes money for CFAR either.
I cover all the overlapping organizations at http://effective-altruism.com/ea/gb/the_2014_survey_of_effective_altruists_results/