Take-Off in Convergence Terms
Evidence essay · Production badge
Economists have argued for seventy years about whether poor countries “catch up” to rich ones. Ask a sharper question — did a country close the distance to the richest economy in the world? — and the picture is stark.
In 1950 there was effectively one high-income economy: the United States. Only eight countries stood even halfway to it, and three of those were tiny oil states riding fixed exchange rates. Bretton Woods — the IMF and the World Bank — was built in that vacuum, and built to fix it: discipline the payments system, steer capital to the poorest, close the gap.
It didn’t close. Of the 46 countries that reached their high-water mark against the US under the Bretton-Woods fixed-rate system (1950–71), 42 have since fallen back below 30% of the US frontier — a 91% non-convergence rate. The countries that did catch up — post-Soviet Europe, then export-led Asia — did it after the fixed-rate system collapsed in the 1970s, under floating rates, and they were mostly countries the 1944 conference never had in mind.
The convergence the founders wanted was real. It just happened after their machine broke, and to strangers.
How the axis works, and the 1950 Club
Two different questions hide inside “take-off”: PPP take-off (Rostow, Maddison) asks whether the economy escaped Malthusian stagnation; US=100 take-off asks whether it closed the distance to the global frontier. PPP take-off tells you whether the economy is functioning; US=100 take-off tells you whether the world is converging. Bretton Woods’ framers conflated the two.
| Country | 1950 | Peak | 2030 | Verdict |
|---|---|---|---|---|
| Qatar | 440.3 | 1971 | 159.1 | rentier — relative decline |
| Kuwait | 166.0 | 1958 | 56.0 | rentier — relative decline |
| Switzerland | 81.4 | 2013 | 100.3 | held the frontier |
| Canada | 71.7 | 2013 | 62.0 | mild divergence |
| Sweden | 66.2 | 1980 | 64.7 | plateau |
| Australia | 61.0 | 2013 | 68.2 | plateau |
| Bahrain | 56.8 | 1977 | 43.2 | rentier — relative decline |
| Denmark | 53.8 | 2009 | 83.4 | late catch-up |
Of the eight countries already at the top in 1950, only Denmark used the next eighty years to climb materially closer. The high-income set of 1950 was already, in convergence terms, a closed group.
Opposing reading, in fairness: a defender of the Bretton-Woods record would argue the par-value system’s job was macro-stability and reconstruction, not frontier-convergence, and that the post-1990 take-offs were only possible because of the trade and payments plumbing the earlier system laid down. The essay’s claim is narrower than “the institutions failed”: on the specific convergence metric the founders themselves invoked, the record is 91% non-convergence, and that fact is only visible once every country sits on one normalized balance-sheet axis.
Source: FAND TL1 Net Worth panel, S320 (WT_NetWorth_FAND_V2, US=100 per year against the USA row). Self-check (S341): 46 countries peak 1950–71; 42 sit below 30% of US in 2025/2030 = 91.3%; robust to re-binning. Production badge, S257/S308.