In my experience producing web video content (especially if you plan on eventually selling ads against it), it's best to aggregate it on one platform. And traffic and visibility-wise, YouTube is the place to do it.
I hate to see anyone build a business based on one platform. I haven't looked at your content, but I'm pretty sure the biggest web video producer I know of (Leo Laporte/TWiT.tv) would disagree with your comment. Gain audience any way you can before trying to monetize.
Google giveth and Google taketh away (often without you really knowing why).