I began to wonder how long it will take for someone to begin working on a fork of Firefox which would include support for h264. I have already seen patches for both DirectShow and GStreamer backends, so I'd guess it's not that hard technically. What we need is a catchy domain name, some marketing and a few devs and the spice shall flow again.
Who's going to pay the licensing fees? If you fork, you probably don't get access to the Google money spigot.
... or just use system codecs.
besides I'd guess Google would be happy to have h264-supporting Firefox, and end this farce, so getting some kind of sponsorship from big G wouldn't be that improbable.