'For the ad seller, the bandwidth used to serve non-dumb users is a net loss, Depends. If the goal is a click or a conversion (actual purchase) then I'd agree.

'For the ad seller, the bandwidth used to serve non-dumb users is a net loss, Depends. If the goal is a click or a conversion (actual purchase) then I'd agree. However, that's not the only benefit to advertising. When was the last time you clicked or purchased something from a television commercial?