I saw it is possible for netflix to direct user to a website to update his/her payment method. On the other hand spotify is not being allowed to develop such bu

I saw it is possible for netflix to direct user to a website to update his/her payment method. On the other hand spotify is not being allowed to develop such button in their app. Netflix and spotify both delivering digital goods. Why does such policy difference exist? I asked apple officials and waiting for a reply. We also have a digital goods transaction based app.(digital photo) We are also not allowed to use such button. Why does netflix have that option to use such thing?