The article is confusingly worded: "Most Online Service Providers pay their Connectivity Provider(s) to be connected to the Internet, which is generally based on the bandwidth they require... In both cases these charges are generally flat fees, not linked with usage..." So a content company may pay a "flat fee" per 10 Gbps port, but of course the number of ports they use is proportional to their peak hour traffic, so essentially they are paying per Gbps.