If YouTube's advertisers found that kind of thing agreeable, I suppose they could. That said, I'm not sure the incentive exists for them to undertake that kind

If YouTube's advertisers found that kind of thing agreeable, I suppose they could. That said, I'm not sure the incentive exists for them to undertake that kind of work. The platform existing for everyday people to disseminate their views is secondary to using user-submitted content as a vehicle for advertising revenue. Another way of thinking about it is that the popular content subsidizes the not-so-popular content. As a corollary: The more popular your content is, the more advertising revenue it needs to bring in. There was even some controversy somewhat recently about this very thing.