A specific issue with video data is that it’s much denser: the same concept in video takes up more bytes than in text or image. Therefore hosting is more expensive, so less people host and the ones that do (e.g. YouTube) expect revenue. Furthermore, because videos are dense, people want to download them streaming, which means hosts must not just have storage but reliable bandwidth.

Even then, there are a few competitors to YouTube like Nebula, PeerTube, and Odysee. But Nebula requires a subscription and PeerTube and Odysee have worse quality, because good video hosting and streaming is expensive.