I dunno. I just don't know how many iPad owners are looking for videos like that. I still found the exact video that you were looking for through a random search (it was the first result, in fact).
And it's not 1/3rd of the video if you find one, and they're all three the same thing.
I've never not been able to find a video on YouTube. Plus, it's not like YouTube is the only option. Vimeo and other video services provide HTML5 compatible video.