Record labels (and the like) suing ISPs like this is such a weird fucking take. Like, imagine book publishers sending their agents to markets, libraries, book shops, etc. and noting down every single book sold and who bought them, then suing the local council/government/roading organisation if they discovered off brand books or even second hand books for allowing book pirates to drive those books along the roads.
Or how about suing the power companies for providing power to pirates, or computer hardware manufacturers, or farmers for growing the food that pirates eat...