I think that tracking to get "good ads" is a wish that never came true and it needs people with taste to choose products people would like to buy.
I think that tracking to get "good ads" is a wish that never came true and it needs people with taste to choose products people would like to buy.
Not every kind of advertising is that suspect to fraud but for every budget out there there is some way to siphon it off without giving the advertiser what they were looking for. It's been an arms race between fraudsters and marketeers with the end-users caught in the middle, and between the marketeers and the users with respect to privacy issues. This ruling injects some sanity for those that have declared themselves to be non-combatants.
Because interacting with the advertising industry, or advertisers directly, is a lot more complicated than just slapping a banner spot on your page/app¹, and sites want to concentrate on with their core business rather than learning another one.
--
[1] finding people to advertise, negotiating rates, arranging reports of add positioning and response², detecting click-fraud, convincing your ad partners that you have dealt with any click-fraud & other such issues, convincing your ad partners that your agreement with them really did involve them paying you at some point before the heat death of the universe, etc.
[2] so they can marry that up with the logs of incoming attention on their systems
Place yourself in the shoes of an ad buyer: a random website offers to display your ad. How do you know what you're getting?
The "measurement function" becomes the uptick in sales resulting from the unique link embedded in said ad and ultimately the money that lands in the bank.
If I buy a newspaper ad I don’t buy unless the paper is well known enough that I can trust their number they claim is their total circulation.
Yes: for the web this means no one buys ads on the bottom 99% of sites.
Because marketing department people come and go so they don't have time/motivation to learn some in-house tool. They know gtag and they are happy with it.
A marketer wants to buy ad space, but doesn't have time to sift through millions if not billions of websites and court their webmasters one by one.
Ad platforms bring together the webmasters and the marketers with a one-stop shop. The webmaster courts Google and gets ads to sell his ad space to. The marketer courts Google and gets ad space to put his ads on.
TL;DR: Efficiency and logistics. Capitalism ho!