Earlier quoted context omitted.
Of course. I'm not saying that the advertisers are wasting their money. I'm saying that it seems that both the advertisers and the ads network could have made more money with a better targeting. At least in my case, they've wasted the cost of the impression and the potential gain from showing a more relevant ad in that space. And this is probably happening millions of times a day.
It is, but the cost of better targeting gets exponential more expensive. Also people complain about targeting and tracking and delete cookies so there's that whole situation (which really only hurts them by giving them worse ads).
Does it? I don't see why. It's not like you have to manually go through the data.