I'd go further and say that it only works for products that are paid for entirely up-front. If there's any ongoing revenue, that creates an incentive to optimi

I'd go further and say that it only works for products that are paid for entirely up-front. If there's any ongoing revenue, that creates an incentive to optimize for engagement. I want products and services that i can ignore - product owners should track their success by how infrequently i interact with their product, not how frequently i interact with it. And even on a monthly payment basis, if i don't interact with a product for a whole month then maybe they start worrying that i'm going to stop paying them.