I didn't think about that until right before I posted it, but that likely makes Amazon the only viable choice of the big streaming services (Netflix, Hulu, Prime) as Netflix doesn't sell anything but the subscription, Hulu has commercials, and will break things that weren't designed for commercial breaks by randomly inserting breaks, but Prime will sell episodes and the 3year delay will require that, allowing HBO to get money from Amazon & it's customers in 2 ways still.
But Amazon Prime's UI is still a reason I don't like it as much as Netflix. I only really use it on the Wii U and the Roku, but navigation and finding something I want to watch that doesn't cost me anything beyond the subscription price I already is much more difficult through Prime.