Implementing PPAPI in Firefox would be a pretty huge task, which is exactly why Mozilla has no interest in doing so. If Adobe provided the patch, they might take it, but still probably wouldn't. They'd still have to maintain that code over time, and the only use for it would be the Flash plugin on linux, since the other platforms still have flash.
Originally Posted by AJenbo
Partially right, Google and now Mozilla are currently developing their own (Shumway) methods of allowing flash to gimp along for eternity when the correct solution is to let it die.
Originally Posted by Ericg
Let Gnash and Lightspark a decade from now eventually have a player for the handful of already ancient interactive flash animations worth watching.