Any chance we can get them to make it available via archive.org as well? Yeah everyone loves Google, but archive.org seems like a vastly better home for content like this - preserving the historical record digitally, more easily allowing it to be downloaded and fairly used in video reports, classroom material, and so forth.
Does archive.org have the storage space or bandwidth to serve this much video?
I agree that archive.org is the "correct" place for this content, but I think YouTube is a more practical location for now (and also the place where I think the content is more likely to be discovered by regular people: many people think of searching YouTube when looking for video content of all types, and YouTube has a top-tier indexing and search engine to help them find the right stuff).
You say "probably", and then link to statistics that don't support the premise and in fact cast serious doubt on it, so I'm not sure what you mean to say here.