Mozilla is pretty much powerless since users blame FF if it doesn't support something and the bulk of its funding comes from one of those corporate interests (Google).
(Both are problems - even if Mozilla had the market share, if it were still funded (almost) solely by Google, these things would still eventually happen, since the power tends to follow the money in the end.).
I really hope Mozilla manages to become financially independent of Google, whether through donations or some other revenue stream.