Sustainability is increasingly viewed on capital markets less as a standalone investment segment and more as a fundamental economic factor, according to Bain & Company's new "Visionary CEO's Guide to Sustainability 2026."
Deike Diers, a Bain partner based in Zurich, contributed to the chapter on sustainable investing. The report's central argument: a strong ESG rating alone does not predict whether a company will be an attractive investment going forward. Firms with high climate exposure could outperform if they adapt their production, energy supply, or supply chains faster than competitors. Conversely, companies with strong ESG scores may lose value if technological shifts, regulation, or physical climate risks pressure their business models.
Global investment flows tell a different story. Over the past decade, roughly USD 17 trillion was invested in sustainable technologies worldwide — approximately USD 4 trillion more than Bain had projected in 2015. Investment growth accelerated between 2020 and 2023, reaching a record USD 2.4 trillion in the most recent year covered by the study.
The forward-looking picture is equally striking. Bain estimates the global economy tied to climate adaptation could reach an annual volume of USD 4.4 trillion by 2050, up from roughly USD 1 trillion today.
That shift is redirecting investment focus. While renewable energy remains important, capital is increasingly flowing toward electricity grids, critical raw materials, water infrastructure, resilient built environments, and sturdier supply chains. These factors increasingly influence production costs, margins, and capital expenditure requirements — and thus company valuations directly.
Bain identified particular potential in what it calls the "adaptation economy," where companies invest in reducing dependence on water, energy, raw materials, and disruption-prone supply chains. Resilience is evolving from a cost item into a possible competitive advantage: firms that become more robust than rivals could capture market share as economic and climate disruptions intensify.
A separate Bain and CDP analysis found that 53 percent of companies with concentrated ownership structures reached the most advanced decarbonization stages, compared with only 38 percent of firms with widely distributed shareholder bases. Bain suggested the longer investment horizons of large owners may enable them to absorb investments whose returns materialize only after several years.
Swiss pension funds and insurers, which typically operate with long investment horizons, could therefore hold a structural edge. They may be positioned to invest early in transformation projects whose economic potential the market has not yet fully priced in.
Bain recommended that investors distinguish more sharply between three scenarios: invest when transformation and economic potential are convincing; wait when conditions are not yet favorable; and exit when a business model faces structural deterioration.
"Sustainability is no longer an independent segment of investment strategy," Diers said. "It is becoming a lens for understanding where tomorrow's competitive advantage will emerge."
For Swiss asset managers, insurers, and pension funds, the question is shifting: the decisive factor for returns will no longer be who carries the best ESG ratings today, but which companies emerge economically stronger from the transformation.
