It's probably not a deliberate attack, rather it is the result of a special arrangement that companies like Sony have with youtube, and negligence by Sony's legal team.
Essentially, Sony have been using the Blender video as part of their promotional material (permissible as the blender video is released as creative commons).
However, Sony's legal team have likely negligently submitted all of their promotional video to youtube, as examples of Sony copyright material. Youtube then adds the material to their copyright filters and autoblocks matches to that material.
There are companies out there who deliberately try to do the same thing - they obtain non-exclusive licenses to a variety of royalty free music/video clips, etc. and then submit them to youtube claiming to have an exclusive license, and steal the adverts on the videos.
There have been people on this forum caught out by that, and friends of mine have been caught out by other shysters who scan youtube for viral videos, and then submit completely fake copyright claims on them. They then drag out the appeals process, so that the video is long forgotten by the time the claim is dropped - however, they've kept all the advertising income during the viral phase.