Okay so it's basically that for cable TV, they've just got some big computers in a locked room with lots of links out to the customers. And that's the network, there's nothing else to worry about. But if they do the same thing with internet, they have to make those computers open to the rest of the world which involves way more costs.
I dunno. Just seems to me like the infrastructure's in place to pump a bazillion bits through my cable modem every second. I just wanna be able to rent movies online instead of going to the store (NetFlix is no good, I only get three a week cause it takes forever to ship em here).