A trivial bookmarket or addon could strip their nonsense from the page. The examples you posted were all single page articles, though. Perhaps multiple pages are rendered on demand in a way that would be less trivial to strip.
Yes, I'm convinced that someone is already hacking away at this. Just look at the state of all eBook DRM being currently broken, and that's a much tougher nut to crack (and publishers have much higher financial gains at stake). Also, since no-one else has mentioned it: analog hole.