Don‘t forget that the copyright law is a civil law, so there needs to be someone being able to proof to have suffered from any damages. Having a law case within a border is usually much cheaper to having one internationally, because every country has a different law system and you need a lot more lawyers, just to then find out there was no damage. So the risk of paying a lot of law fees without getting any damages covered is just too high. Obviously, it makes sense that big studios will try to hunt down big trackers, but I think even with my 25/25Gbit I am far away of being an interesting target, especially on an international level. At least this is how my view on this is.