Transit costs in Seoul run 15 times higher than in Frankfurt. South Korea's government mandates commercial interconnection rates based on predetermined network tiers, giving incumbents like Korea Telecom pricing power that settlement-free peering elsewhere would prevent. When you're running browser fleets globally, this isn't trivia. It's operational cost shaped by economic structure that crystallized two decades ago.

The internet's cost hierarchy emerged from a consolidation moment that made economic position purchasable.

When Tier Position Became an Asset

In February 2003, Level 3 Communications paid up to $242 million for bankrupt Genuity's network assets. The acquisition included 17,500 route-miles of fiber and customer contracts with Verizon and AOL. Level 3 acquired Genuity's position in the internet's economic hierarchy.

Genuity had been Tier 1—one of roughly thirteen networks that could reach the entire internet without paying transit fees. The hierarchy:

• Tier 1 networks peer with each other settlement-free, exchanging traffic based on mutual benefit
• Tier 2 networks pay Tier 1 for transit while peering with similar-sized networks
• Tier 3 networks pay everyone above them

The acquisition solidified Level 3 as a dominant backbone provider alongside WorldCom/UUNet and AT&T. The transaction revealed something: tier position—and the economic leverage it represents—had become purchasable. $242 million could buy what used to require years of building global infrastructure and negotiating peering relationships.

Building global infrastructure and negotiating settlement-free peering relationships had defined Tier 1 status. The Genuity acquisition revealed a shortcut: enough capital to acquire position through bankruptcy courts. The hierarchy had solidified into tradeable infrastructure advantage.

The Origin Wasn't Inevitable

In April 1995, the National Science Foundation decommissioned NSFNET—the publicly-funded backbone that had carried internet traffic at no cost for nearly a decade. NSF created Network Access Points where commercial networks could interconnect, expecting them to exchange traffic cooperatively.

The largest networks realized they controlled essential infrastructure. Why peer freely when you can demand payment? The three-tier hierarchy emerged from economic leverage. By 2003, that structure was entrenched enough to become an asset class.

How This Shows Up Operationally

We encounter these consequences building web agent infrastructure at scale. Running browser sessions from São Paulo costs differently than Amsterdam. Local tier providers extract higher transit fees from regional operators who lack routing alternatives. The 2003 consolidation gave dominant networks enough market power that local interconnection became negotiation where one side holds all leverage.

South Korea's regulatory approach demonstrates the pattern. Government mandates on commercial interconnection rates, based on predetermined network tiers, run counter to settlement-free peering models elsewhere. Bandwidth costs rise while they decline globally. Tier hierarchy enables regulatory capture. Deploy distributed systems across regions and you're navigating economic architecture that became infrastructure reality.

The hyperscalers recognized this and built their own global backbones. Google, Amazon, Microsoft now control more international bandwidth than traditional Tier 1 providers. They opted out of the hierarchy by becoming it—constructing parallel infrastructure at scale that bypasses transit economics entirely.

Building parallel infrastructure entrenched the hierarchy rather than dismantling it. For everyone else building distributed systems, the tier economics from 2003 still determine operational costs. The consolidation locked in two realities: pay the hierarchy, or become large enough to bypass it completely. There's no middle path.

The Durable Foundation

Three decades after privatization, we build on inherited economic landscape. The pipes are faster, protocols evolved. The cost hierarchy remains: some networks reach everywhere without paying, others pay based on tier position, and geographic variations multiply those costs through local interconnection politics shaped by consolidated market power.

Running thousands of browser sessions across global infrastructure means navigating cost structures that trace to a 2003 consolidation that made internet economics permanent. Economic hierarchy became the durable foundation of internet operations. Tier position transformed from years of infrastructure building into capital acquisition, defended through market power and extracted as operational cost.

Internet economics became infrastructure reality. The consolidation made it irreversible.