Private Money, Public Good: The Alchemy of Turning Self-Interest into Collective Health

There is something almost magical about the idea that private capital - driven by the cold logic of return on investment - could become a force for prevention, for the slow, invisible work of keeping people healthy before they get sick. It feels like trying to teach a river to flow uphill. And yet, in the right conditions, it does happen. Through a kind of institutional alchemy: redesigning the vessels in which money moves, so that what was once a contradiction becomes a synergy.

This is not idealism. It is pragmatic idealism, the art of arranging incentives so that self-interest and collective well-being stop cancelling each other out.

The Wrong Pocket Problem: When Good Intentions Get Lost in the System

Prevention is a victim of temporal and spatial displacement. Its benefits arrive later, elsewhere, or in forms that don’t neatly map onto the ledgers of those who pay for it. A municipality funds a smoking cessation program, but the healthcare system reaps the savings. An employer invests in mental health support, but the reduction in welfare dependency accrues to the state. A landlord improves housing conditions, but the drop in asthma-related hospital visits benefits insurers.

This is the "wrong pocket problem", a term that sounds like a bureaucratic glitch but is actually a structural misalignment of incentives. It’s not that anyone is opposed to prevention. It’s that our systems are designed to reward what is visible, immediate, and attributable, and prevention is often none of those things.

Yet the problem isn’t just that prevention is underfunded. It’s that we are asking it to justify itself in a language it wasn’t built to speak. We demand that it prove its worth in short-term savings, direct causation, and siloed budgets, when its real power lies in shaping conditions, the slow accretion of resilience, the quiet avoidance of crises, the invisible scaffolding that holds up a healthier society.

The Illusion of the Free Market in Health

We often treat private capital as if it operates in a moral vacuum, as if its only possible role in health is either exploitative (profit-seeking at the expense of well-being) or philanthropic (charity, CSR, "doing good"). But this is a false dichotomy. Private money is not inherently good or bad - it is a tool, and like any tool, its impact depends on how we design the systems that deploy it.

The real question is: Can we create structures where private investment in prevention is not just morally laudable, but also financially rational?

The answer, as it turns out, is yes, but only if we stop trying to fit prevention into the existing logic of markets and instead reshape the logic itself.

Three Ways to Rewrite the Rules

1. Pay for Outcomes, Not Activities: The Health Impact Bond Model

The traditional way to fund prevention is to pay for inputs: the number of workshops held, the brochures printed, the hours spent. But this creates a perverse incentive, it rewards doing things, not achieving things.

Health Impact Bonds (HIBs) flip this. Investors provide upfront capital for a prevention program (e.g., fall prevention for the elderly), and they only get repaid - with a return - if the program delivers measurable results (e.g., a 50% reduction in falls). If it fails, the investors lose their money.

This does two things:

• It transfers risk from the public sector to private investors, who are better equipped to absorb it.

• It aligns incentives - investors now have a direct financial stake in the program’s success, not just its execution.

The genius here is not just the financing mechanism, but the shift in mindset. Prevention stops being a cost and starts being an investment - one that can yield returns if structured correctly.

2. Shared Savings: When Less Spending Becomes More Profit

In most healthcare systems, providers and insurers make money by doing more, more procedures, more treatments, more billable hours. Prevention, by definition, aims to do less of that. So how do you make it financially attractive?

Shared savings models do this by rewarding the absence of cost. In the Gesundes Kinzigtal model in Germany, doctors and insurers jointly manage the health of a population under a regional budget. If they spend less than the benchmark (by keeping people healthy), the savings are shared between providers, insurers, and reinvested in more prevention.

This turns the logic of healthcare on its head:

• Instead of profiting from sickness, providers profit from health.

• Instead of competing for patients, they collaborate to reduce the need for care.

The result? Fewer hospital admissions, lower costs, and a system where prevention is not just a moral duty but a financial strategy.

3. Blended Finance: Pooling Money to Pool Risk

One of the biggest barriers to private investment in prevention is uncertainty. Will the program work? Will the savings materialise? Will someone else capture the benefits?

Blended finance, mixing public, private, and philanthropic capital—reduces this uncertainty by distributing risk. The Life Chances Fund in the UK, for example, uses government money to co-finance local prevention projects after they’ve proven their impact. This lowers the risk for private investors, who can now enter with more confidence.

The key insight here is that private money doesn’t have to go it alone. By combining it with public and philanthropic funds, you create a hybrid system where:

• Public money de-risks private investment.

• Private money scales effective programs.

• Philanthropic money tests innovative approaches.

This isn’t about privatising prevention. It’s about creating a ecosystem where different kinds of capital play to their strengths.

The Philosophical Underpinning: Prevention as a Commons

At its core, the challenge of financing prevention is a challenge of recognising value that doesn’t fit into market logic. Prevention is a public good - its benefits are diffuse, long-term, and shared. But our financing systems are built for private goods, where costs and benefits are tightly coupled.

The solution isn’t to reject private capital, but to embed it in structures that honour the commons. Health Impact Bonds, shared savings, and blended finance are not just financial tools - they are institutional hacks, ways of tricking the market into serving the common good.

This requires a shift in how we think about both money and health:

• Money is not just a commodity to be maximised, but a medium of collaboration - a way to align disparate interests toward a shared outcome.

• Health is not just the absence of disease, but the presence of conditions that make disease less likely.

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The Dutch Experiment: Can We Design a System Where Prevention Pays?

The Netherlands is already experimenting with these models - Stevig Staan (a Health Impact Bond for fall prevention), GelijkGezond (a cross-sector fund for health equity), and local pilots in outcomes-based financing. But these remain exceptions. To move from pilots to system change, we need to ask:

• How can we create regional prevention funds where municipalities, insurers, and employers pool resources, and share the savings?

• How can a National Prevention Outcomes Fund act as a backstop, co-financing programs once they’ve proven their worth?

• How can we anchor prevention in law, so that it’s not dependent on the whims of political cycles?

These aren’t just technical questions. They’re questions of design: Can we build a system where private money doesn’t just fund prevention, but accelerates it?

Conclusion: The Alchemy of Alignment

The wrong pocket problem is a flaw in how we’ve structured the flow of money and value. But flaws can be features if we redesign the system around them.

Private capital doesn’t have to be the enemy of public good. It can be its unlikely ally, if we create the conditions where investing in health is not just the right thing to do, but the smart thing to do.

This isn’t about making prevention profitable in the narrow sense. It’s about making it rational - aligning self-interest with collective well-being, not through moral suasion, but through clever design.

In the end, the goal isn’t to make private money less self-interested. It’s to make self-interest serve the common good.