Someone (preferably multiple organizations) should bundle steganography just because it's desperately needed for a tiny minority - doing so would not be because of a killer app but simply a service for public good, facilitating democracy, free speech, whistleblower protection, etc.
This is aligned with the stated ideals of multiple FOSS organizations, so it is feasible to assume that someone with popular widespread software (like, say, Firefox, Ubuntu or VLC) could do that for purely idealistic reasons. The software size is tiny, so the distribution overhead would be trivial while making a serious strategic change. Do it just because it can be done.
