[arihelgason]

Because their advertising overpriced? Surely it's easy enough for advertisers to monitor results. Curious why there's this perception.

[Hyena]

Cognitive bias? Advertising is impersonal but advertising firms are very personal? Why do people ever make bad decisions in the face of data?

I think there's a core of people convinced that advertising really works well or convinced that "it would if only". I'm skeptical.