> Untargeted pay less than 90% of targeted ones generally. I'd like to see the source of that claim. E.g. this particular study claims almost the exact opposi

> Untargeted pay less than 90% of targeted ones generally. I'd like to see the source of that claim. E.g. this particular study claims almost the exact opposite: "Targeted ads need to be 100% to 700% more efficient than regular ads to be as profitable": https://www.sciencedirect.com/science/article/pii/S0167811623000502 https://www.sciencedirect.com/science/article/pii/S016781162...