Very true, few people know how to keep ads profitable when you have a high volume of traffic. The rotation scheme used to help. In a way publishers have to have

Very true, few people know how to keep ads profitable when you have a high volume of traffic. The rotation scheme used to help. In a way publishers have to have their own private ad tech to integrate with commercial ad tech to game it in some way in order to not be completely milked in a never ended reduction of value of one’s traffic as a user base grows unresponsive. Representing the broker, the publisher and the house is efficient and is how google can spend your ad budget and deliver absolutely nothing in return. It takes expertise (more money) and a long runway to even break even with todays google “ad tech”.