QuickTime Player DRM Blackscreen

I am not sure which forum to post this in. But since I have been accustomed to using QuickTime player for this purpose thus far, this seems an appropriate place to start my inquiry.

I recently noticed that I have unilaterally lost the ability to screen capture online video for my recreational use: as soon as I attempted to record a snippet of a video, the streaming service would black out the screen. At first I thought that it was a fluke phenomenon particular to a certain internet browser or streaming platform. But after I tried a range of other screen recording apps -- including EaseUS, WinX HD, OBS, and MacX -- all which had the same effect, I now realize that this is a new universal standard for all online content interaction. Is this all related to Content Decryption Modules?

Has anyone else successively navigated this issue with or without QuickTime Player? Am I right in assuming that this is not a Mac-specific phenomenon? The fact that this same phenomenon occurs while attempting to screen record a DVD seems to suggest that Mac OS has now also been modified in its design. I'm not trying to be provocative or controversial; I'm just trying to understand the recent changes that have occurred, so that I can adapt accordingly.

Thank you for any information you can provide.