SAMUEL MACKAY, ROB HALES, JOHN HEWSON, ROSEMARY ADDIS AND BRENDAN MACKEY |
The world has already surpassed 1 degree of global warming, and the consequences of climate change are now being realised. Despite mounting urgency, climate inaction remains a significant barrier to sustainable development. Addressing this challenge requires reframing climate inaction as a systemic market failure that demands transformative policy responses. Governments must take a more proactive role in facilitating meaningful climate action by enabling market systems that prioritise sustainability.
The economic risks of climate inaction
The Stern Review (2006) was among the first to identify climate change as “the greatest market failure the world has ever seen.” While this recognition is widely accepted, the risks of inaction remain largely unaddressed in policy frameworks. Current policies often assume that effective climate action will emerge through the right interventions, overlooking systemic market failures that hinder large-scale behavioural and economic shifts.
Economic data underscores the dangers of continued inaction. The International Monetary Fund (IMF) estimates that, under current trajectories, global real GDP per capita could decline by 7 per cent by 2100. The Lancet Countdown (2023) predicts a 4.7-fold increase in heat-related deaths by mid-century. Additionally, climate-related disasters between 2000 and 2019 cost an estimated US$2.86 trillion, with human and economic losses disproportionately affecting vulnerable populations.
Despite widespread climate policies and commitments under frameworks such as the Sustainable Development Goals (SDGs) and the UN Framework Convention on Climate Change (UNFCCC), meaningful progress remains limited. A 2021 analysis by Jeffrey Sachs found that global climate policy efforts are stagnating, despite strong public demand and clear economic benefits for transitioning to a net-zero economy. This stagnation suggests a fundamental disconnect between climate objectives and real-world economic and social dynamics.
Climate inaction as a systemic market failure
Current policy approaches often fail to address climate inaction as a structural economic issue. While policies aim to drive mitigation and adaptation, they frequently lack mechanisms to counteract systemic market failures. Market actors—including businesses, investors, and civil society—face competing priorities, resource constraints, and inadequate platforms for collective action. As a result, they are not the primary drivers of inaction but are instead constrained by a system that fails to prioritise climate action.
To overcome this challenge, policymakers must reframe climate inaction as a systemic market failure that threatens sustainable development. This shift requires a market systems development (MSD) approach that fosters long-term structural change. Unlike traditional market interventions, which focus on correcting small inefficiencies, MSD targets the development of market conditions that support long-term sustainability. By integrating climate considerations into broader economic and governance frameworks, MSD enables transformative change that aligns with sustainable development goals.
Policy recommendations
1. Facilitate market systems that enable shared value on climate action
Addressing climate inaction requires collaboration across sectors to establish shared climate risks, opportunities, and priorities. Effective policies should:
- Foster collective impact through a shared agenda, continuous communication, and mutual reinforcement.
- Implement network governance models that integrate policy vision, multi-level planning, and cooperative funding.
- Ensure public institutions uphold legitimacy, transparency, and equity to drive shared value.
- Align market incentives with climate-positive actions to reduce risk and encourage sustainable investments.
By embedding climate action within a broader economic value system, governments can create market conditions that naturally incentivise sustainable behaviour across businesses, investors, and consumers.
2. Strengthen public institutions as key actors in climate action
Public institutions play a crucial role in mitigating climate risks, yet many lack the capacity to implement effective climate policies. Strengthening these institutions involves:
- Investing in knowledge-building and strategic partnerships.
- Conducting capacity assessments and integrating climate governance into standard institutional frameworks.
- Supporting long-term technical assistance and institutional ownership of climate policies.
- Ensuring equitable decision-making that prioritises vulnerable and marginalised communities.
A resilient and well-resourced public sector is essential for guiding market systems toward sustainability and ensuring climate policies are implemented effectively.
3. Ensure finance blending structures enable investment in climate action
Blended finance, which combines public and private investments, is a critical tool for mobilising capital for climate initiatives. To maximise its impact, policies should:
- Address investment barriers, data gaps, and risk concerns that deter private sector participation.
- Establish strong governance frameworks that provide clear market signals and build investor confidence.
- Reduce transaction costs through streamlined regulatory processes and risk-sharing mechanisms.
- Develop financial models that balance risk and return while ensuring social and environmental benefits.
By structuring climate finance to attract diverse sources of capital, policymakers can accelerate investment in sustainable infrastructure and innovation.
4. Ensure market system interventions are effectively modelled and validated
For climate policies to drive systemic change, interventions must be rigorously modelled and validated. Key approaches include:
- Using predictive analysis and economic modelling to assess policy impact.
- Incorporating agent-based models (ABMs) and dynamic stochastic computable general equilibrium (DSGE) models to simulate market responses.
- Enhancing transparency and trust by making data-driven validation a core part of climate policymaking.
- Designing interventions that reflect real-world economic behaviour and social dynamics.
By adopting evidence-based approaches, policymakers can improve decision-making, minimise risks, and ensure resources are directed toward high-impact climate solutions.
Conclusion
Climate inaction remains one of the greatest threats to sustainable development, despite decades of climate policies and mounting evidence of the economic costs of inaction. Current climate policies often fail to integrate mitigation and adaptation efforts into broader economic frameworks, resulting in isolated, short-term interventions that lack systemic impact.
Reframing climate inaction as a systemic market failure demands a shift in policy focus. Governments must adopt a market systems development approach that:
- Builds the market ecosystem for enhanced participation and collective action.
- Provides market enablers that motivate behaviour change and investment.
- Ensures market assurances that provide certainty and confidence for climate-related decision-making.
With the climate clock ticking, policymakers must take decisive action to address systemic market failures. By leveraging market systems approaches, strengthening institutions, and fostering sustainable financial mechanisms, governments can unlock the transformative potential of climate action and safeguard sustainable development for future generations.
Samuel Mackay and Professor Brendan Mackey, Climate Action Beacon, Griffith University, Rob Hales, Griffith Asia Institute, John Hewson, Crawford School of Public Policy, Australian National University, and Rosemary Addis, Faculty of Business and Economics, University of Melbourne.
This article is a synopsis of a journal article titled, “Addressing climate inaction as our greatest threat to sustainable development”, published in Global Environmental Change, written by Samuel Mackay, Rob Hales, John Hewson, Rosemary Addis and Brendan Mackey.
