[drivebyacct2]

Gnash, swfdec, lightspark, scaleform, smokescreen and others that I'm forgetting are making progress. Most of them are highly compatible with the simple image and video use cases that dominate well over 95% (at least of my) use of flash.

[protomyth]

A third-party cannot ship a flash plugin that supports Hulu. Not working 5% of the time causes nasty support issues.