I just checked their financial report for 2022 and it looks like 50% came from patron funding (which looks like entirely companies like Google), 5% from epics grant, and then 10% corporate membership. 20% came from individuals, and the rest from random other miscellaneous things like the blender market. If you search blender foundation annual report 2022, the finances breakdown will be near the end of the slides.
Wikimedia foundation is, none of the other things I listed are.
I think the key there is funding from big companies. There’s tons of standards and the like in which big companies take part - both in terms of code and financial support. Big projects like the rust compiler, the Linux kernel, blender, etc. all seem to have a lot of code and money coming in from big companies. Sadly there’s only so much you can get from individuals - pretty much the only success story I know of is the wikimedia foundation.
It looks like on blender’s website there’s 6 entities on there, and one of them does seem to be an individual fwiw. Here’s his website: https://aras-p.info/.
The rest all seem to be corporations though - meta, aws, some game company I’ve never heard of, AMD, and epic.