The Second Great Zimbabwe Economic Journal · Value Sovereignty Research Programme

The Common Scale

What five cases establish about value sovereignty — and why Africa must author the theory of its own wealth.

Getty Musiiwa · Tete Getty Research Institute · Synthesis & capstone of the four-case programme

For a generation, the story told about Africa’s mineral wealth has been a story of loss — of the curse, of dependency, of the continent as the place where wealth becomes poverty. This essay, the capstone of a four-case comparative programme, argues that the story is not false but incomplete. Alongside the loss runs a climb; and the climb is African too.

01 The wager the programme set out to settle

A framework earns its generality the hard way. Value sovereignty — the idea that what matters is the share of a mineral’s value chain a nation captures and controls, and the deliberate policy of climbing it — was drawn from a single case: the Sandawana lease in Zimbabwe, where an emerald once left the country rough to be finished in other people’s workshops, and where a lithium resource now sits under a policy built to make the rock into a chemical before it leaves.

One case can demonstrate a framework’s purchase; it cannot establish its reach. And because the theory was drawn from that case, a fair critic may ask whether it was reverse-engineered to fit. So the programme tested it against four further cases chosen by design — a most-different-systems test across two regional blocs and the full institutional range of the continent: Botswana’s diamonds, Ghana’s gold, Nigeria’s oil, and the Democratic Republic of the Congo’s cobalt. If the propositions hold across cases this unlike, they are not local to Zimbabwe. They are robust.

A single case can demonstrate a framework’s purchase; it cannot establish its reach.

02 Against the single story

The novelist Chimamanda Ngozi Adichie warned of the danger of a single story — the account of a people that is not so much untrue as incomplete, and whose danger lies in becoming the only account. African political economy has long laboured under such a story: mineral abundance breeding slow growth and weak institutions, the raw material leaving and the finished good returning at many times the price. The story is not false. Each of its mechanisms is visible, honestly recorded, in the cases here. The trouble is that it stops at the diagnosis of a condition — and, stopping there, forecloses the possibility it never quite examines: that a nation can decide to climb.

Value sovereignty refuses that single story in two ways. The first is a refusal of content: it reads mineral economies not for growth and governance but for value capture — and so stages a drama the curse literature does not, the drama of the ascent itself. The second, deeper, is a refusal of standpoint. The inherited theories were built to look at Africa from outside — exported to it as models, written about it from the North, or written against the system in a pessimism that denied African states any agency at all. This programme is an attempt to author the account from within.

To read Africa this way is not to sing to it. It is to hold it to a standard, on the evidence, case by case.

03 Five cases on one common scale

Every case applied the same four propositions and closed with a verdict drawn from one controlled vocabulary — present, absent, asserted, achieved, contested. That shared scale lets five economies as unlike as a diamond exporter and a cobalt exporter be read against one another without special pleading.

The first thing the ledger shows is that no case sits at either pole. Between them, three cases occupy the middle band — value sovereignty asserted — at distinct points and along distinct trajectories.

• Zimbabweasserted — in motion (the anchor)
• Botswanaasserted — late, partial, rising
• Ghanaasserted — early, serious, exposed
• Nigeriaachieved-in-part — and contested
• DR Congolargely absent — newly contested at market power

And the more telling thing: the crowded band is the middle, and the empty pole is the far right. Not one of these economies — not the best-governed, not the largest producer, not the one remaking its policy fastest — has reached secure, mature value sovereignty. All are climbing; none has arrived. That is not a counsel of despair. It is the map of a common task.

04 Every nation, partway up its own ladder

Read the five value ladders together and one feature holds across every mineral and every bloc: the nation begins at or near the base, and value sovereignty is the labour of leaving it. Botswana, the continent’s model developmental state, shipped its diamonds rough for the better part of forty years. Nigeria exported crude and queued for the fuel refined from it. Ghana, a leading gold producer, had no functioning domestic refinery at the start of 2025. The DR Congo exports its cobalt as an intermediate and captures almost nothing above it. Zimbabwe’s emerald, half a century before its lithium, left rough.

The lesson is exact. Raw export is the continental default, and good governance does not, by itself, disturb it. Value capture is never the starting condition; it is always a later achievement, requiring a distinct decision.

The default is gravity. Value sovereignty is the climb against it.

05 The four propositions, read five times

The synthesis can do what no single case could: read each proposition not once but five times, and ask what it looks like once five readings are in. Two columns tell a story on their own.

The agency column lights up everywhere — and that uniformity is itself a finding. The programme loaded the dice against it, including Nigeria, the case the curse was almost written for, and the DR Congo, where a weak state holds the defining mineral of the age. Neither licensed fatalism. Nigeria’s refining deficit, so long taken for a fixture, was overturned in fact by a single refinery. The DR Congo, unable to capture the processing value, asserted agency along a different axis — through an export ban and quota regime it made itself a price-setter, a swing producer rather than a spectator. The forms differ; the fact of agency does not.

06 The rootedness gap

If agency is the framework’s most encouraging result, rootedness is its most sobering. In every case without exception, the rootedness of captured value in the producing community lags its capture by the national exchequer. The nation, in each instance, wins before — and sometimes instead of — the people who dig.

The gap is widest in Nigeria, where the new refining value is captured near Lagos while the crude is drawn from a Niger Delta that has borne six decades of extraction’s cost. It is narrowest in Ghana, and narrowest by design: aimed at the artisanal and small-scale sector, the value newly retained is rooted where the raw-export model left it thinnest. That the gap can be narrowed on purpose is the hopeful counterpart to the finding that it exists everywhere.

A nation can climb its value ladder while the people who dig remain at the bottom of it.

07 Two dimensions — and a possible sequence

The DR Congo forced the framework’s most valuable new distinction. It cannot, in the near term, capture the processing value of its cobalt — it lacks the refineries, the capital, the plural counterparties. Yet it is not without recourse, because value capture is not the only dimension of value sovereignty a state can assert. Through its quota regime it seized control of the price and volume of its raw material. Command over the market is separable from capture of the chain.

The cases populate the space widely, and cluster in a way that suggests a sequence the programme can raise though not, on five cases, prove: market command appears the more accessible dimension, reachable even from the base of the processing ladder, while capture of the chain is the harder and slower achievement. Zimbabwe’s export bans, Botswana’s use of indispensability, and the DR Congo’s quotas would then be instances of one logic — assert control over the terms of exit while you build the capacity to add value before exit.

08 What the cases taught the framework

Each case strained the framework at a different joint, and each strain became a refinement — the durable analytical output of the programme.

09 The verdict

The programme was built to answer one charge: that a framework drawn from Zimbabwe was reverse-engineered to fit Zimbabwe. The answer is now on the record, and it is structural. The framework read a strong-institution diamond state and a weak-institution cobalt state; an oil giant and a gold producer; two blocs; state, private, and foreign capture; four forms of the hedge and the near-absence of any — all on one common scale, without special pleading for the case from which it was born.

The answer is credible only because the framework was strained honestly where it strained. The DR Congo very nearly defeated the value-capture proposition; rootedness returned a deficit in every case, including the successes; three cases are live and their verdicts provisional. That the framework survived these strains, and was refined by them rather than refuted, is a stronger result than an unstrained fit could ever have been.

10 Coda — the single story closed

The framework’s ethical spine — its refusal of fatalism, its measure of development in the dignity of the people at the base rather than in aggregate output alone — was formed in the study of peace and development, at the University of Bradford’s Department of Peace Studies and in the study of international politics and security that accompanied it. It is no accident that the proposition strongest across every case is agency over fatalism: the conviction that what human arrangements made, human arrangements can remake, is peace studies’ oldest lesson before it is economics’. Behind it stand the libraries of the schools this author attended across Zimbabwe, where the habit of reading toward one’s own questions was first formed.

The four cases, with the Zimbabwean anchor, do not deny the curse, the dependency, the long divorce between what the continent digs and what it keeps. But they insist the diagnosis is not the whole story — that alongside the curse runs the climb, and that the climb is African too, authored from within, measured on its own evidence, and finished, when it is finished, at home.

Alongside the curse runs the climb — and the climb is African too.