This statement has become a cliche of sorts. Does it really hold truth? I hear it so often that I just accept it, but what are they actually doing to make so many people say this?
I've always thought it was because they provide content that is fungible. One porn video or picture is pretty much replaceable with any other, perhaps within a certain genre.
Compare that with Hollywood video, TV or the music industry. Is one movie or show really replaceable with any other or do you want a specific film, show or album.
So, by comparison they are a more competitive, freer market hence greater innovation.
The other fast mover is scripture, which is public domain and so finds its way onto each new medium very early on for similar reasons.
I think the innovation is in quick adoption as it is usually said that the porn market is always one of the first to adopt a new media, be it mobile devices or blue rays or a new touch screen computer.
