This is interesting - it says that they are connected to an internet exchange point (IXP), which means presumably they are their own AS and don't pay for peering. It makes them basically a peer of Verizon, etc.. It's a bit of a reminder of what the internet actually is - a bunch of networks connected together. If you make your own network, negotiate or purchase a piece of the IPv6 address space, and convince someone…
The network engineering world is very different from software. Relationships are everything and the pricing very opaque. Often pricing and lists of “who is in the building” are even behind NDA. If you are an “eyeball network” (more downloads than uploads) your transit costs will be much cheaper if you know how to negotiate, for example.