Originally Posted by Smallwheels
The iDevice is the vehicle that takes you to the store, just like a Ford can take you to a store. The app by the vendor (someone who sells things like stores do) is like a store. If I bought an app it belongs to me. Anything that goes on between me and that vendor are between me and that vendor. If that vendor wants to direct me, using a link, to a web site outside of the Apple Universe then why should Apple demand a cut of the business between me and that vendor?
I can understand Apple requiring Apps to conform to specific programming guidelines so that the Apps perform properly on the iDevice. Beyond that Apple should just enjoy the profit they get from the sale of the app on its own.
As long as we're staying in the car theme here,
iDevice is your car
App store is your dealership service center
Apps are the items and services available through that service center
in-app purchases are 3rd party programs and services you get for your car through the service center
If you buy your oil, wiper, parts outside of the service center, they get no cut
if you sign up for services with 3rd party by yourself, e.g. install your own satellite radio in the car and sign up for a contract, without involvement of service center, they get no cut.
However, if you buy oil, wiper, othe parts, or get your service done at the service center, they should and they do get a cut.
If you have your service center install the satellite radio, or sign up for a contract at your service center, they should and do get a cut.