[LiamPowell]

Netflix has a far smaller catalogue and can cache content in exchanges very close to the user, see [1]. Also YouTube pays their creators.

[1]: https://en.wikipedia.org/wiki/Open_Connect

[danpalmer]

Google has its Global Cache: https://en.wikipedia.org/wiki/Google_Global_Cache

One might imagine that the cache-ability is lower than Netflix, I can't comment on this, but GGC is very significant.