> This is not true of video hosting - there can be as many video hosts as people care to build, and they are all equally usable from anywhere on the internet.

There is a limited number of viewers, and content creators. YouTube has the monopoly on those two limited resources.

I'd also contend that "equally usable" is also not true, especially with HD videos. Most of the world can't stream 4k videos across a L3 provider (which YouTube does not have do).