While it's still a lot, software development is only about half of the Mozilla Foundation's expensive (and not all of that is the browser). They spend around $5

While it's still a lot, software development is only about half of the Mozilla Foundation's expensive (and not all of that is the browser). They spend around $50 million/year on marketing, ~$75 million/year on administration, etc. They publish annual audits and reports (which ironically probably eats up a million bucks on its own).