And the ones who vet and "print" (locally serve) the ads. You know, the way print and broadcast media have been doing it pretty much since their inception. The "targeting" only ever has to amount to content-linked (a photography site would be pretty safe serving camera and editing software ads) and general brand consciousness stuff (they're probably not going to buy a car this week either, but we want them thinking Chevy when the time comes).
The internet and cheap computing has made anyone with some writing skills able to compete with journalists.
So maybe journalism as a profession is dying as blogging as a hobby rises. Of course there is value in professional journalism, but the need for that journalism is more specific.
IMO it will happen similar to encyclopedia authors or GPS makers followed a decade back.
By producing much better content and analysis then they currently do. The kind of content and analysis that someone is willing to sponsor or pay for or support through other ways. There's no shortage of bloggers, small outlets, and analysts who are doing just fine - no intrusive ads needed.