In January 2020, Larry Fink published his annual letter to the chief executives of the companies BlackRock invested in.
BlackRock then managed about US$7 trillion, which made Fink effectively the largest single investor on earth. His argument was direct. Climate change, he wrote, would bring a fundamental reshaping of finance. Physical risks were material. Transition risks were material. Companies that could not show how their business models fit a low carbon economy would face a rising cost of capital and, in the end, questions about their long term viability. BlackRock would act accordingly.
The letter hit global capital markets hard. Its ambition was not radical, since Fink was describing in blunter language a position many institutional investors had been building for years. It landed because it came from BlackRock. When the world’s largest asset manager declares that climate risk is investment risk, and signals it will act on that with capital, the question for every organisation stops being philosophical. It becomes financial.
The Fink letter did not make sustainability a strategic necessity. It made it impossible to pretend otherwise.
For two decades, organisations chose what to report, picked frameworks that flattered their performance and ran sustainability largely as a communications function. That made sense while sustainability was voluntary. Reports told a story, and stories could be revised. Weak metrics could be played down. Ambitious commitments could be made without the governance needed to meet them, because the gap between promise and delivery carried only reputational risk.
That world did not end with a single regulatory event. It ended because three forces arrived at once.
Force one: regulation that no longer waits
The first was regulation. The EU’s Corporate Sustainability Reporting Directive brought mandatory, assured sustainability disclosure to Europe’s largest companies. Its scope was cut sharply in 2026, from an estimated 50,000 companies to around 5,000, but the companies that remain are the ones whose supply chains and investors reach everywhere. The IFRS Foundation created the International Sustainability Standards Board as a global baseline for investors, and more than 35 jurisdictions have adopted its standards or committed to them. California passed laws requiring large companies doing business in the state to disclose their emissions and climate risks. Around 80 carbon taxes and emissions trading systems now operate worldwide. The direction across major economies is towards more convergence, not less.
Force two: capital has already moved
The second was capital. Sovereign wealth funds such as Norway’s Government Pension Fund Global, Mubadala, GIC, Saudi Arabia’s Public Investment Fund and the Qatar Investment Authority built sustainability criteria into mandates worth hundreds of billions of dollars. Institutional asset managers, holding well over US$100 trillion between them, now routinely expect sustainability disclosure. Reform agendas such as the Bridgetown Initiative, championed by Barbados Prime Minister Mia Mottley, are pushing development banks to change how they finance climate action. Private equity added transition criteria to due diligence that once looked only at financials. Clean energy investment reached about US$1.7 trillion in 2023. That is still well short of the roughly US$4 trillion a year the International Energy Agency’s net zero pathway needs by the early 2030s, but it marks a lasting shift in where global capital goes.
Force three: physical risk reaches the balance sheet
The third was physical reality. Insured losses from natural catastrophes have topped US$100 billion every year since 2021, and economic losses run at roughly twice that. Major insurers such as State Farm and Allstate have pulled back from writing new home policies in California. Heatwaves and floods in Europe are hitting sectors from agriculture to tourism to utilities. The physical effects of climate change are no longer projections in scientific models. They are balance sheet events, happening now, in every region.
Why this convergence will not reverse
Earlier phases of the sustainability movement faced one or two of these pressures at a time. The voluntary CSR era of the 1990s was driven mostly by reputation. The first climate regulations of the 2000s created modest financial incentives but left most organisations undisturbed. What is happening now is different in kind. All three forces are working together, reinforcing each other and producing a structural change that no passive or incremental response can handle.
Regulatory pressure speeds up capital reallocation. Capital reallocation speeds up the pricing of physical risk. Physical risk speeds up the regulatory response.
Even the regulatory retreats of 2025 and 2026, from the narrowing of the CSRD to the end of the Net-Zero Banking Alliance, have not reversed this. They have changed the pace and the politics, but not the physics or the economics underneath.
The organisations that understand this are building lasting advantages. Those that do not are piling up liabilities that compound.
For executives, finance leaders and boards, the question is no longer whether to treat sustainability as a core business function. Regulators, capital markets and physical reality have settled that between them.
The question now is how fast, how credibly and how substantively. The next decade will answer it, one organisation at a time.
Draws on Chapter One of my book, Sustainability Leadership: The Global Outlook, where this convergence is developed as the Convergence Triangle framework.