You incorrectly reference zero sum games (actually, negative sum because of the middle man), where winners' gains come entirely from the losers. Ads are definitely not that, they are a regular market with supply and demand. It seems that the top actors get a disproportionate amount of profits though.
Disagree. You called out a pattern that has characteristics, but ads don't match the characteristics. There is a superset of characteristics that this pattern falls into as well, but now you are making a misleading analogy.
