We get Amazon Prime free shipping via my brother's business so we have not signed up ourselves and don't get the free Amazon Prime content which friends and family members say is amazing.
The thing is: there is so much good content that it is fine, at least for me, to not have access to everything.
Another distribution model that I like is Google Play Movies and TV. It is a little pricy but I wanted to watch the Worricker Triliogy (fantastic!!) the the new scifi Expanse and it was so very convenient simply buying both series and watching them anytime on any device. If the cost was a little less, and if Google Play had most content, I think that I could be happy with a completely a la cart pay per view experience.
A suggestion for anyone working in this industry: when content is rented, offer a purchase option that is valid for a week. Sometimes I have rented movies and liked them enough that I would pay the difference to own permanent viewing rights.