I do not see an option to download any of the content I "own" on Prime. Of course, I don't think it would do you much good if you could find the downloads as they are sure to be DRM-protected.
This seems to be based on the fact that YTTV has 10M users and Disney is getting about $10/user/month from YTTV so, 100M/30 = 3.3M + whatever ad money is lost
The issue with this logic is they get paid when the agreement is signed, so really the amount will be negligible by EOQ