You can give Waterfox your money. Just not for the browser itself. They sell ad free search[0].

[0] https://search.waterfox.net/

As I mentioned in a comment below (https://news.ycombinator.com/item?id=46297617 ), Firefox does not rely only on sponsors. There are a few ways to pay money that goes directly towards Firefox.

> I still can’t give them money, so what’s the point?

What do you say about the following link, then?

> https://www.mozillafoundation.org/en/donate/