Intellectual property law is about controlling what you can see, and do, with your own eyes, ears, and hardware.
If you stream a video on YouTube, YouTube can arbitrarily take it away from you whenever they want. If you download a video from YouTube, it's yours to keep. Tools like youtube-dl take away the power YouTube has over you, and that's an unacceptable loss to the ownership class even if they suffer no financial losses.
Intellectual property law is about controlling what you can see, and do, with your own eyes, ears, and hardware.
If you stream a video on YouTube, YouTube can arbitrarily take it away from you whenever they want. If you download a video from YouTube, it's yours to keep. Tools like youtube-dl take away the power YouTube has over you, and that's an unacceptable loss to the ownership class even if they suffer no financial losses.