Isn't it time for a big lawsuit against some large ISPs (like Verizon) for allowing Sony to scam people like that?
If there are 2 people scammed, Sony can get away with a warning, but if there is 3th - they should disconnect all Sony related servers from the internet.
That should be fair.
The point is that one side can "legally" do that the other can not (in most countries). It's really not about the technical side of it, but the legal one.