Ngl, I still feel like they're shooting themselves in the foot with this in the long run. Sure, this saves them $$$$ on residuals, but it also reduces the variety of their library (an important part of attracting subscribers, it's not all about the big headline titles) and makes people feel less secure that their favorite shows will be finished or remain available, so they might not even start watching until it's finished, and that kills early viewership numbers.
I feel like more and more people will subscribe for a month, binge one or two shows, and unsubscribe until the next big thing they're ibterested in comes out.