Amazon is totally focused on its "Prime" service and tries all the possible methods to avoid unsubscriptions.
Each great marketer has 3 products: one for the ads, one for sales and one for margins.
Amazon goes beyond. Its third product (the Prime service) actually starts a new sales funnel, thanks to the new "Amazon Prime Video" service.
So, as you become a Prime user ==> new front end offer, i.e. the first season of a tv series and movies for free ==> upselling of tv series and other movies ==> diminishing Prime service's drop-out rate.
Is there a way you can apply this double-funnel in your business?.