Like, literally find them in their homes and dead them.
EG, There are only so many ways to display spam to someone, And if we aren't seeing it it's going to stop.
But there will always be a way to share information, and it's the end user that cares they don't mind how they get it so it wont be stopped.
Piracy still exists because people want things for free and copying digital content is a lot easier than stealing a physical product.
Both of these things share two key aspects:
1) The technology in charge of suppressing them cannot suppress them 100% (yet).
2) They appeal to basic nature in a large pool of humans.
Yet everyone seems to focus so much on the first aspect...
That would also works for me.
Like, literally find them in their homes and dead them.