Earlier quoted context omitted.
Who would license content to a company without any DRM protection?
Your question implies that there's any practical use for that DRM in streaming services. There's not and it does nothing useful but annoy users. Anyone with ounce of motivation can easily bypass and extract the media content, so the only thing DRM does is piss of paying users which can't watch content on flaky connections, flights, travel and alternative operating systems. Meanwhile on torrent sites you find Netflix…
An important use for DRM in regards to streaming services is to prevent people on shared networks from getting access to the data. For instance, if I was in a college dorm with dorm-wide wifi, and I was watching my de-DRM'd Netflix, anyone on the dorm intranet could snoop my packets and get the data being transmitted to me by Netflix, for free.
That is nigh on impossible to do when the content is encrypted with DRM.