it's a completely obvious "problem" -- more users are easier to monetize, even if they "simply" go the Wikipedia donations model
many people stated that they are happy to do targeted donations (ie. money earmarked strictly for Firefox development only, and it cannot be used for bullshit outreach programs and other fluff)
and if they figure out the funding for the browser (and other "value streams") then they can put the for-profit opt-in stuff on top