I wish there was a page on mozilla.org with the title, 'This is how Mozilla makes money'.
> How does Mozilla generate revenue?
> The majority of Mozilla’s revenue is generated from search and commerce functionality included in our Firefox product through all major search partners including Google, Bing, Yahoo, Yandex, Amazon, eBay and others. Mozilla’s reported revenues also include very important individual and corporate donations and grants, as well as other forms of income from our investable assets.
An extra couple billion dollars a year wouldn't hurt either.
[1] https://www.mozilla.org/en-US/foundation/annualreport/2013/
That, if we get down to it, is what they were originally set out to do.
It has their financial statements.