Hosting this video requires a lot of storage and bandwidth. I would not be surprised to learn YouTube alone requires $50,000,000 to $75,000,000 in hard drive purchases per year. Sure, they make a lot more than that in advertising, but I imagine every year those hosting and storage costs go up.

Why not implement an option for creators to share some of that load if they want to opt-out of advertisements on their videos? That way, everyone wins. YouTube gets money for the hosting of video, creators keep content ad-free.