They could let users give them money for the browser. The two obvious ways are to make a "Firefox Pro" that is completely identical but with a different logo or

They could let users give them money for the browser. The two obvious ways are to make a "Firefox Pro" that is completely identical but with a different logo or something just to let people pay for it, or make a "Firefox Pro" that, y'know, doesn't have ads. The second one doesn't exactly sit well with me but either is better than the current approach.