Because it's vastly cheaper and accessible. It's also crowdsourceable and can be done by anybody without having to pass any bar exams.
HN user
js471
I would love to see more negative publicity used. A PR firm is a fraction of the cost of a law firm but can do a lot more damage to the other side. Unfortunately lawyers have this dogma that says never ever ever ever ever try to use negative publicity. This is obviously self serving. Most lawyers are clueless about social media post AOL and so this would take the battle into unfamiliar territory. Unfortunately the judges are in the same boat: Taking a legal matter to court of public opinion is to them like taking getting your gall bladder removed by a witch doctor.
I complained about a corporation that was breaking the law in an online forum. They sued me for defamation, saying flatly that they had no dealings whatsoever in the accused activity. Shortly after they sued someone else in the same state claiming that, in the process of the same illegal activity, which they described in detail, some other party was not acting in good faith. I ask my lawyer "how in America in 2016 can they make two blatantly contradictory lawsuits?" The lawyer told me "This is a pissing contest you don't want to be involved in. You should settle ASAP". So I paid my life savings and tried to move on.