Surely some people just use screen recording software for the "Download" illegally part?
The DRM technologies in place prevent screen recording from working, as far as I know. Or at least prevent it from working at high resolutions.
I found this interesting, so I tried: I recorded a HD movie on Netflix in Firefox, recorded using simplescreenrecorder on KDE5 in Xorg. I remember it was impossible to record shared screen in old (Ebay owned Skype).