I wouldnt worry, remember the video is not all OW4 so there is probably going to be other people like Halo fans uploading this onto the net., either in fragments(ive seen it done for other programs that had multiple games featured) or the whole entire program.
IGN also stated that they would keep things updated on the new game. Meaning they will probably put excerpts from OW4 on their site, that are from the DC program. Also oddworld fans who might be filming it with digital recording, could easily transfer that to quicktime its not a very complicated process.
I highly doubt that it will not get on the net someway or another. I felt the same way about E3, in missing things like the Halo 2 demo, it eventually got leaked onto the net the day of, you just have to look around a bit and not give up on searching a lot.
I just personally am glad I have digital cable.
*Sees the massive OWF Mob outside of his front door*
-Al
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