Earlier quoted context omitted.
Why do you equate DRM with subscriptions? It's perfectly possible to have subscriptions to content without DRM.
A DRM-free subscription service would immediately lead to a ripper tool that would download everything in one month, which would immediately lead to Hollywood studio execs pitching hissy fits.
With all that MPAA and the like have done to this industry, I can't fathom Netflix getting to serve much content and for very long if they can't guarantee a strong protection over the content. Obviously there are always ways to circumvent the steps taken, so long as the GPU stream is pipeable.