<i>If the only widely adopted format on web becomes h264...</i><p>It already is, thanks to Flash.<p><i>...which would already be the case if Mozilla wasn't resisting (which most of you attacked)</i><p>It already is and Mozilla is doing very little to stop it considering they continue to fully support Flash. What the are actually doing is hindering the adoption of the &#60;video&#62; tag, because their implementation doesn't support the formats that are actually in use.