[apendleton]

Yeah, but for non-live broadcasts you can do this too, but do it asynchronously, and indeed, Netflix does. If you're watching reasonably popular content (Luke Cage, say), you're not getting it from Netflix proper, you're getting it from a a Netflix point of presence colocated with your ISP. It's the exact same "fan out" model, but for most of the transit (the whole part that crosses the open Internet) they can take as long as they want, transfer during off-peak periods, are tolerant of congestion, etc.