Advertising is an intentionally complex system so that companies can clip the ticket at multiple stages throughout the process. Google should be broken up, but the whole ad tech system needs to go into the bin if these problems are going to ever get fixed.
https://www.forbes.com/sites/augustinefou/2021/02/15/how-muc...
Some companies like Google are incredible at this. Google is not a "monopoly" in this space. In fact the world has far too many Google equivalents but absolutely no one comes close to Google in generating top dollars for publishers. I am saying this after working for 10+ years competing against Google.
But since Google is playing both sides and has so much sway over the market, they're able to manipulate things. Even if they're not manipulating things to their benefit, it's still not great to have a single party have so much control.
but that is the value of a marketplace, aligning buyers and sellers via the price mechanism
Every setup where someone makes the platform and sells stuff built on top of it is inherently abusive. You just don't know when the abuse will come and against whom.