How about just 4 ads – inside cover, page 2, inside back and outside cover.
Is this a sign of a downturn or evidence of smart strategy? I don’t know. I’ll presume the later because it helps my point.
Why fill your product with ads when the inside cover, inside back cover and the back cover will give 80% of your advertising revenue (along with subscription). Why compromise the integrity of the product for only 20% more revenue?
How does this apply to your products?