> I would guess that at least 25% of Apple profits come indirectly from in app advertising for apps related to in-app-purchases With that logic you could say t

> I would guess that at least 25% of Apple profits come indirectly from in app advertising for apps related to in-app-purchases With that logic you could say that nearly all Apples profits come indirectly from advertising as they trigger people to buy hardware, apps and services. If people spend x hours and $10 a month on in-app purchases on their favourite game and that game was taken away, many would just spend the time and $10 on another game - ie Apple will always get their share, the ads just help decide which app developer gets the rest.