So is it a case of where they start out following the ethics guidelines the classes taught them, but end up pushing the edge and pushing the edge until they go too far, with the process generally taking years, as they slowly become disillusioned and greedy?
You'd hope that they start out ethical. Judge Wright in California said that their porn trolling cases were basically allowed because they found the nexus of outdated copyright laws, a paralyzing social stigma for the defendant, and potentially expensive litigation that people want to avoid. It just seems like the lawyer's version of a get-rich-quick scheme. They can interject into class action suits and extract a payment that way with minimal effort, they can monitor bittorrent and send settlement letters to downloaders for a few thousand with minimal effort, etc.