One could say that Google has killed the internet, in the sense that information is fabricated, copied, rehashed and stolen with the exclusive aim of getting a "click" or a "page view".
However, the drive to push or peddle information - to convince someone of something - is intrinsic to human behavior or consciousness.
And in fact, every piece of information delivered from a brain of one individual to the brain of another individual can be broadly classified as a marketing of sorts, e.g. a parent marketing good behavior to his/her child.
In that sense, in the internet domain, we have primary marketing/propaganda in the form of the main article text, and secondary marketing in the form of what we call "ads".
This secondary (or even meta) approach has never really worked that much (despite appearing so, given the sheer size of internet), and due to aggressive optimization and competition it has gotten out of hand to the point where people, and now big business, are reacting against it.
Given all that, what I think will happen, is that the force behind the secondary type (ad, popup, flash) of marketing will regroup into the more stealth (and more effective) primary form of marketing, and new ways of tracking the success of it will have to be developed.