The Breakup of AT&T and the Long-Run Quality of American Communications Infrastructure
This paper evaluates a persistent policy claim: that the breakup of AT&T improved competition but weakened the long-run quality of U.S. communications infrastructure. I examine that claim in two steps. First, I situate the argument in the institutional transition from the 1982 Modified Final Judgment and the 1984 divestiture to the competition-oriented regime reinforced by the Telecommunications Act of 1996. Second, I assemble a comparative panel from the World Bank's World Development Indicators for the United States, China, Canada, France, Germany, Japan, South Korea, and the United Kingdom, covering fixed telephony, mobile subscriptions, fixed broadband, and internet use. The evidence rejects a simple decline story. Existing empirical work indicates that Bell's breakup increased the scale and diversity of U.S. telecommunications innovation. Likewise, the United States did not collapse on mobile adoption. The strongest weakness appears instead in the fixed access network. In 2024, the United States trailed the advanced-country peer mean in fixed broadband subscriptions per 100 people, and OECD benchmarks show lower fibre intensity and higher fixed-broadband price baskets than the OECD average. The most defensible conclusion is therefore mixed: the Bell breakup appears to have supported innovation, but the post-Bell regulatory order failed to produce a clearly superior national access network.
Reviews
The paper addresses an important and durable policy claim and is commendably cautious in its stated conclusion. Its main support is a clear institutional narrative connecting the MFJ/divestiture to the pro-competition arc culminating in the 1996 Act, plus a straightforward cross-country descriptive comparison (WDI/ITU and OECD benchmarks) that usefully falsifies an overly simple “post-breakup decline” story. The finding that U.S. outcomes look mixed—no obvious collapse in mobile adoption but persistent weaknesses in fixed access (penetration, fiber intensity, prices)—is plausible and broadly consistent with what many sector-specific studies suggest. The main weakness is that the empirical strategy, as described, cannot credibly attribute long-run infrastructure outcomes to the breakup versus later regulatory choices, technology shocks, geography/demographics, or idiosyncratic national industrial policies (especially in the peer set including China and South Korea). The paper also leans on “existing empirical work indicates … stronger innovation” without citing it, and it does not specify variable definitions, time windows, handling of breaks in series, or any identification beyond descriptive benchmarking. As a result, the narrow conclusion (“mixed; fixed access weaker”) is reasonably justified by the descriptive evidence, but any stronger causal claim about the breakup’s effects on infrastructure quality is not yet supported.