The only way to be the post-Netflix Netflix would be to offer more titles for less. Since Netflix streaming is already essentially free (ok, $8/month, but c’mon) and is already offering everything they can offer legally, that means post-Netflix will have to be free and offer any imaginable title. In other words, it will be a criminal enterprise. Since it will be a criminal enterprise anyway, there’s no point in handwringing over how DRM is blocking development.
I suspect it will be some variant of anonymous torrent technology optimized for streaming as you download.