There are already addons to skip in-stream adds for when people do those sponsor segments. It just crowd sources the most consistently skipped parts and does it automatically.
Depends how wide the range of ads is, if its a set amount/month then you could use the same method to pretty quickly identify which segments of data are ads and automatically cut them out wherever they occur.
Sponsor block works so well because the content to skip is exactly in the same place for everyone's video.
They don't have that kind of limitation.
Sb also requires you to initiate a fast forward during a commercial. They could ignore that command while commercials are running.
At that point we need to store the buffer as it's coming in. Detect the commercials based on sound or scene changes.
Since they do have a limited number of of commercials, if we did the crowd effort to identify and catalog /fingerprint commercials we may be able to do a more accurate method for detection and skip. At least until they are modifying the commercials with AI to avoid detection.