Apparently they have an annual budget of ~$10M. From the contributors, it's easy to recognize the Chan Zuckerberg Initiative (so Meta), Google, MSFT. This is great.
Having said that, I'd still say that $1-2M for a CSS library seems more than enough. Not everything needs to be "scaled"..
you'd be surprised
https://numpy.org/about/#sponsors https://curl.se/sponsors.html