If only there were some company dedicated to providing search for resources that others host online. Perhaps if they had a mission to make the world's knowledge more accessible. :-)

Plus, I'm pretty sure if you excluded stuff that's never likely to be watched by many folks except the odd fluke that gains viral notoriety (think: training videos, home videos that aren't aiming for virality, schools filming sports & activities and posting them, that kind of thing) you could cut that number to 10% or less of that. Most of the content going up isn't intended for a wide audience, I'd bet. An at-least-as-good video-podcast client wouldn't need to index or present the vast majority of what gets uploaded to YouTube. Much of that would be fine over on one of the lesser streaming services (Vimeo, say) now, but only ends up on YouTube because it's synonymous with user-uploaded Web video for most folks.