Firefox Send is still an experiment at Mozilla (as noted on the site). The question now is whether it is popular and useful, and how much it actually costs to r

Firefox Send is still an experiment at Mozilla (as noted on the site). The question now is whether it is popular and useful, and how much it actually costs to run. Those questions aren't answered yet, and there's no big schemes behind it. If Firefox Send graduates from being an experiment, then it recoup its costs implicitly if it can increase engagement with Firefox itself (which does produce revenue), or awareness of Firefox and Mozilla. Firefox's revenue comes primarily from search companies who pay for preferred placement in the browser. In that sense, people who search using Firefox are ultimately the product. However, Mozilla is a mission-led company, and so profit maximization isn't ultimately the answer to why Mozilla does something. I think it's accurate to say that Mozilla is trying to maximize its positive impact. Revenue certainly enables that impact. But direct impact is also worth something, and it's not necessary for everything Mozilla does to involve profit maximization.