What ended piracy for common films was not DRM or videocassette seizures but the offer of cheap tapes and eventually cheap streaming that made it simply "not worth it" to pirate. The same is true of video games where paid players far outweigh pirates.
In other words, if the art film industry wants piracy to stop, it needs to bring all its materials together in a cheap subscription store that people can afford. Criterion[0] is one such product with outstanding content, real human curation, and a lower price than mainstream movie providers.