Or... you can see hacks like a flu pandemic. This one dies out, but other ones are created, ones we don't know, we can't detect. Hacks we can't get a cure for right away. Loads of people will die from it until we get a cure.
But, this is a good thing. Nodus is (I think) one of the most widely used hacking tools, and though people who hack may easily find another way, a few might actually give up. I don't see how the closing of Nodus could produce more hackers, though. I'm just going to consider this a good thing and be content in it.