I guess "stealing" is done by "thieves" but i didn't mean to be so harsh, next time i'll be more careful with my words. Whilst copying bits has negligible cost, the _original_ cost of production has to be borne by someone, do the people paying to watch pay more to cover those that don't pay? The price of access is part of the license, another example would being crediting sources when using cc by-sa material. Sony's actions here don't engender any sympathy, but with piracy i'm more concerned with the writers and artists etc..
What I _meant_ to emphasise was that the button shouldn't be labelled "buy" if someone else can take it away. Not allowing this label this would help steer people away from situations like Sony just created, and help encourage DRM-free options.