The operators told them so. Why do you think every heavy app had this limit? Skype over 3g? Forget. Itunes is just another victim. Why do you think only month

The operators told them so. Why do you think every heavy app had this limit? Skype over 3g? Forget. Itunes is just another victim. Why do you think only months after att cut out the option of a unlimited data plan everyone is announcing data heavy stuff? Android even has voip now. Expect that limit to go away next ios update.