Since 2000, productivity growth in the U.S. fixed network business has plummeted, while productivity in the mobile segment of the business has increased dramatically. Prior to 2000, labor productivity growth for the mobile industry was only a little faster during the 1987 to 2000 period. All that has changed since 2000.
Levels of technology investment might explain some of the divergence. But demand shifts arguably account for most of the change.
In the wired industry, output peaked in 2000. In fact, the fixed network part of the industry actually produced less output in 2018 than it did in 2000. Conversely, output for the mobile industry has continued to multiply, growing at an average annual rate of 13.1 percent since 2000, says the U.S. Bureau of Labor Statistics.
The issue is how to explain the differences. If one believes there is a causal relationship between technology adoption and productivity, lower capex for fixed networks--and much higher investment in mobile--might be part of the answer.
But it also is easy to point to diminished customer demand for products delivered on a high fixed cost platform. As subscriptions have fallen by about half, the cost to serve each remaining customer is correspondingly higher. That automatically hits productivity.
In the U.S. market, fixed network revenue peaked around 2000, and has steadily fallen since then. For example, long distance minutes of use peaked in 2000. The number of U.S. landlines in service peaked about 2001. Long distance revenue peaked about 2001 as well.
Put another way, most productivity problems in the fixed networks segment of the business could be fixed if customer demand were to double.
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