I think they still sometimes go for it even when they know they aren't recouping their losses, to deter/scare potential users. Obviously that doesn't scale and it's mostly for publicity stunts but it did happen here in Canada. They more or less just scanned a few trackers and went after every Canadian IP address they found for the given torrents.
https://www.cbc.ca/news/canada/nova-scotia/movie-studios-bit...