>>> As of September 2021, the Wikimedia endowment stands at >$100 million.
>> It seems that this is approximately how much they spend each year and have ~500 staff.
> It's one of the most visited site on the planet, and people are constantly writting on it. It's on the same scale of facebook, youtube or twitter, activity wise.
How much of that money and staff goes to actually running the site and maintaining the software? IIRC (and correct me if I'm wrong), a large fraction actually goes to other efforts.