Let’s say they were organizing using telephones instead. Would you want the telephone providers to proactively listen in on their conversations and cut them off based on content? No. You get the police or FBI to investigate and hunt down the people, possibly with warrants obtaining information from the telephone companies, and target the people doing the crimes.
I feel it should be exactly the same with ISPs. The ISP shouldn’t be doing the policing, the police should be doing the policing. The ISP’s job should be passing bits from MAC address A to MAC address B, nothing more.
I don’t know that stealing is morally wrong no matter what. My rabbi taught that if a man steals to survive, the crime is not his, but of his community because they did not save him from poverty. That teaching really stuck with me. Yes, stealing indicates something is seriously wrong in the world, but there’s a big difference in where the evil lies— is it in the thief, or in the society?