The product in this case is the right to view copyrighted material. You absolute can own digital material, that’s the entire point of copyright.

You have no right to the video material of say amazon. Amazon can do with their video material as they please, that is their product and they own it. They have the right to control the distribution of that product. When you priate, you infringe on their copyright, which makes it so they lose money on the service where they sell the right to view that copyrighted material. You can spin it until the sun is blue, that is stealing.