They already rate limit popular files that match these patterns. They don't actually block the file though, and there were (and still are) ways around the rate

They already rate limit popular files that match these patterns. They don't actually block the file though, and there were (and still are) ways around the rate limit. (Which presumably they knew about to some extent, given you now cannot make copies of said files.) They could easily start taking action on obvious copyright violations using Drive, but it's unlikely they would want to, unless actually mandated to legally. I'm not sure what they would do about massive encrypted collections that have been rcloned onto their servers though. Aside from "please stop breaking our de-duplication".