I find that I am often looking for information in video form (generally because I am trying to learn how to do some physical skill or to learn about something that is innately movement based such as dance). Although I often use Bing's video search in order to not just get YouTube results, the majority of them end up being on YouTube anyways.
In general I haven't found a good way to search for video content so it seems whether irrelevant whether its on YouTube or not since I cannot find it either way.
Am I misunderstanding you?