On concessional finance as embedded fragility.

Concessional finance is often celebrated as a tool for unlocking infrastructure in frontier markets. In engagement after engagement we find it introduces a specific, structurally embedded fragility — one that compounds silently until the concessional regime shifts, and then transfers the shift to the business it financed.

The mechanics are not subtle. A business whose capital stack was priced assuming below-market debt is a business priced to those terms. Its equity value, its debt-service coverage, its return profile — all of it is calibrated to a cost of capital that is not endogenous to the business itself. When the concessional tranche refinances, or is withdrawn, or is conditioned on terms that no longer align, the business inherits a cost structure it was never underwritten to survive.

The matrix separates four positions. The only durable quadrant — top-left — is where the business generates cash flow capable of servicing market-rate capital, and where subsidy dependence is low or absent. Everything else is contingent, and the contingency is political.

This is not an argument against concessional finance. It is an argument for a specific discipline: if concessional tranches are used, they must be used in positions where the business would remain viable at market rates — with the subsidy accelerating, not enabling, the outcome. Anything else is the Subsidy Trap: a business that appears profitable until the donor climate, the electoral cycle, or the geopolitical realignment moves — and then isn’t.

We underwrite capital structures that survive the withdrawal of every subsidy. Most of what we see in the market does not. The distance between those two positions is where most infrastructure failure in the region has occurred over the last two decades, and where most of it will continue to occur until the discipline becomes standard.