I don't believe ads are the only culprit. Daily, and increasingly, we give away our decision making to a myriad of sources. Blogs. Fox News. @aplusk (Ashton Kutcher). Apple product keynotes.
Hopefully we can also use the same technology to liberate ourselves from the magnetic attraction of ads and the media and do something positive. I'd look to recent events (Arab Spring, #OWS) as a possible glimmer of hope there.