BCG Henderson Institute — "Beyond Tomorrow: Four Scenarios for the World of 2050"
April 2026. Authors include Alan Iny et al.
Original URL: https://www.bcg.com/publications/2026/beyond-tomorrow-four-scenarios-for-the-world-of-2050
PDF: https://web-assets.bcg.com/20/b1/521bbd2d431fba3b32dac5af5d64/bcg-scenarios-2050-apr-2026-web.pdf
(BCG blocks direct programmatic fetch — content below reconstructed from PR Newswire / Morningstar / South Africa Trade Desk / AI Journal / Hellenic Shipping News mirrors and the Henderson Institute summary.)

Method: built from "more than 100 megatrends and a century of historical data." Two implicit axes appear to be (1) cooperation vs. fragmentation and (2) high vs. low tech-and-energy progress, though BCG does not present a clean 2x2.

Headline framing: "Planning for a single future is a gamble. The advantage will go to leaders who prepare for multiple futures." — Alan Iny

Cross-scenario envelope: global GDP in 2050 ranges 1.6× to 3.4× today's size; low-carbon electricity share ranges 55%–90% of generation.

--- SCENARIO 1: AI ABUNDANCE ---
Driver: global cooperation on AI standards leads to faster productivity growth, wider access to technology, abundant low-carbon energy.
- Global GDP growth ~5% annually 2025–2050; GDP triples or more.
- Average working hours fall ~25% (e.g. 2100 → 1600); three- or four-day workweek emerges.
- Net-zero pathway delayed but credible via AI-supported materials and carbon removal.

--- SCENARIO 2: BATTLING BLOCS ---
Driver: geopolitical tension fragments world into economically decoupled, mutually distrustful alliances.
- Global trade falls to ~35% of GDP (down from 57% in 2024) — Cold War levels.
- Global GDP growth ~1.8%/yr — lowest across scenarios.
- Global defense spending rises to ~7% of GDP — highest across scenarios.
- Talent mobility compressed; regional economic silos.

--- SCENARIO 3: CLIMATE COALITION ---
Driver: extreme weather events in the late 2020s push governments, industries, consumers to prioritize climate resilience.
- Warming stabilizes at ~1.8°C.
- Fossil fuel share of energy falls 81% → 35% by 2050.
- Low-carbon electricity approaches total power generation.
- Carbon markets expand globally; most major economies participate by 2040.
- Global GDP growth ~2.5%/yr.

--- SCENARIO 4: DIGITAL DARWINISM ---
Driver: rapid technological progress continues under limited regulation; growth concentrates wealth and power.
- Global GDP growth ~4%/yr; GDP near tripling.
- Richest 1% holds nearly 50% of global wealth.
- Middle class continues shrinking.
- Defense spending rises to ~4% of GDP (from 2.4% in 2024).

OBSERVATIONS:
- BCG's four scenarios systematically vary cooperation × tech-velocity. Climate Coalition and AI Abundance share cooperation; AI Abundance and Digital Darwinism share fast tech; Battling Blocs is the only "slow + fragmented" corner.
- BCG does not seriously explore: (a) AI catastrophe / mis­alignment, (b) sub-replacement fertility collapse driving secular stagnation, (c) successful degrowth, (d) violent conflict above Cold-War baseline. The downside cases are economic, not civilizational.
- BCG quantitatives are mid-range relative to other forecasters: their "Battling Blocs" GDP growth of 1.8%/yr is roughly OECD's baseline for 2060. Their "AI Abundance" 5%/yr is well below Kokotajlo / e/acc but above McKinsey's productivity-driven scenario.