This volume set out to show that the rule is the design of markets — that the last and most fundamental of the institutions is the rule itself, the framework of chosen rules within which all exchange happens. The rulebook established the premise: a market is a human artifact, built to a design, running on rules that someone chose. The auction and the match showed the design at work — the same competition reaching different ends under different rules, and, where money cannot clear, the design doing everything. The interest showed the rules being shaped by those who contest to write them. The flagship must now gather these into the capstone of the whole family, and answer the question the author placed at the volume's heart: markets are built, not found — but built by whom, and in whose interest? The answer, which Daron Acemoglu and James Robinson have pressed further than anyone, reaches past the design of any single market to the deepest fact of economic life: that the rules of the economy are made by those with the power to make them, in the interest of those who make them, and that this — not resources, not geography, not culture — is the bottom on which the wealth and poverty of nations rest.
Begin with the appearance the whole table has, until now, taken at face value. The market seems authorless. The price families described it as a spontaneous order — supply meeting demand, prices forming as if by an invisible hand, the whole vast coordination of economic life arising without any author, from the uncoordinated choices of millions, needing no designer and serving no one's particular intention. This is the market's most powerful self-image, and its deepest claim to authority: that it is natural, impersonal, the way water finds its level, and that its outcomes — who is rich, who is poor, what is made, what is paid — carry the neutrality of nature, no one's fault and no one's design. On this image rests the old injunction to leave the market alone, as one leaves nature alone, for it is wiser than any planner and answerable to no one because authored by no one.1
The volume has dismantled this image piece by piece. Every market, we have seen, runs on rules — what may be traded and what may not, who may participate, how offers are made and answered, what must be disclosed, how deals are enforced, how competition is policed by antitrust and shaped by regulation. These rules are not nature; they are choices, and different choices yield different markets. The auction proved that the same bidders reach different outcomes under different rules; the match proved that where money is forbidden, the rules do everything. There is no market underneath the rules, waiting to be freed of them — strip the rules away and you do not find a purer market but no market at all, only the war of all against all, predation in place of exchange, the condition men built the rules to escape. The market is not the absence of design but a particular design; not found in nature but built, as a building is built, to a plan that someone drew. The invisible hand, if it works at all, works only inside a frame of visible rules, and the frame is made.2
If the market is built, then someone builds it — and the first half of the author's question is: by whom? The rules of a market are written by those with the power to write them: legislatures that pass the laws of property and contract and competition, regulators that set the terms of entry and exchange, courts that interpret and enforce, standard-setters that fix what all must follow — and, working upon all of these, the firms and groups and interests with the most at stake. The deep claim that Acemoglu and Robinson make is that institutions — the rules of the economic and political game — are not chosen by a benevolent designer for the common good, nor handed down by history or geography, but reflect the distribution of political power in a society: those who hold power write the rules, and they write them to keep and use that power. To ask who built a market's rules is therefore to ask who held the power when they were built; and the rules, once written, tend to entrench the power that wrote them, so that the design of the economy and the distribution of power sustain each other. The market is built by the powerful, and bears the shape of their power.3
The second half of the question — in whose interest? — Acemoglu and Robinson answer with the distinction that organizes their account of why nations succeed or fail. Institutions, they argue, come in two kinds. Extractive institutions are rules built by those with power to extract from those without — rules that concentrate wealth and opportunity in the hands of an elite, that bar entry and competition, that leave the property of the many insecure while securing the privileges of the few. Inclusive institutions are rules that distribute opportunity broadly — that secure the property and rights of the many, open markets and offices to talent, and constrain the powerful from simply preying on the rest. The difference between them is the difference in whose interest the rules are written: extractive rules serve the designers, the narrow group with the power to write them; inclusive rules serve the broad public, and arise only where power is broad enough, or checked enough, that no narrow group can write the rules for itself alone. And the recurring discovery, which this volume has met at every turn and which the interest named directly, is that the natural tendency is toward the extractive — that those who can write the rules will write them for themselves, unless the distribution of power forbids it.4
Here is the capstone inversion, toward which the whole family has been building. The market presents itself as the impersonal, authorless order whose outcomes carry the neutrality of nature. But its outcomes are shaped, as much as by the impersonal forces of supply and demand, by the rules within which those forces operate — and the rules are not impersonal at all. They are authored, by particular people, with particular interests, and weighted toward those with the power to write them. The invisible hand, in the end, wears a very visible glove: the hand of the market moves within a glove of rules, and the glove is cut and stitched by the powerful, to fit their hand. What looks like the neutral working of nature is, at its foundation, the working of a designed and contested order — politics congealed into rules, the distribution of power made into the architecture of exchange. The market's claim to the neutrality of nature is therefore the deepest illusion in economics, and the most consequential, for it disguises as natural and inevitable an order that is made — and made by some, for some, and could be made otherwise. The market is not nature; it is an artifact, and like every artifact it answers to its makers.5
The stakes of this could not be higher, for on the design of the rules rests, in Acemoglu and Robinson's account, the wealth and poverty of nations. Why are some nations rich and others poor? Not, they argue, because of geography — neighbors sharing a climate and resources diverge enormously. Not because of culture — peoples of one culture, split by a border, prosper on one side and languish on the other. The deepest cause is institutions: nations with inclusive rules — secure property for the many, open competition, power constrained — grow rich, because such rules let people invest, innovate, and reap what they make; nations with extractive rules — where the powerful prey on the rest, entry is barred, and property is insecure for all but the elite — stay poor, because such rules destroy the incentive to create what others can seize. The design of the market is thus the deepest determinant of prosperity, deeper than any factor the aggregates will measure: the growth a nation enjoys or fails to enjoy traces, in the end, to whether its rules were built to include or to extract — to whether the market it built was made for the many or for the few. The rules are where the wealth of nations is, at bottom, decided.6
And so the rule gathers the whole family of institutions and reveals what they have in common. The firm, the contract, the money, the tax — each, we found, does something the bare price cannot, and each rests on something built. Now we see that what each rests on is, at bottom, the rule: the firm operates within rules of incorporation and competition, and could not exist without the law that makes a company a person and limits its liability; the contract binds only because a rule stands ready to enforce it; money holds its value only on the rule that backs it and the public it is good for; the tax is levied and bears only as the rules of the code and the market allow. The whole institutional edifice — everything that makes a market more than a crowd of people who cannot transact — is a structure of rules, and the rules are built, and contested, and weighted toward power. The institutions are not, as the market's self-image would have it, the natural furniture of economic life; they are a constructed and contested order, raised by human hands, bearing the marks of the hands that raised them. The market the price families took as the primitive of all economics is revealed, at the family's close, as the most made of things — and the rule is the making.7
The institutions, then, are complete. We began this family with the firm, the island of planning in the sea of the market; we pass now from the rule, the design of the market itself, with the whole edifice assembled: the firm that organizes, the contract that binds, the money that clears, the tax that funds, and the rule that frames them all and is framed, in turn, by the distribution of power. Group IV — the institutions — closes here, the third of the table's families to be made whole; and it closes by turning the table's deepest assumption inside out, revealing the market not as the spontaneous given of economic life but as its most authored artifact, built by whom and in whose interest, with the wealth of nations hanging on the answer. What remains of the table now lies on either side of this constructed order. There are the aggregates — the cycle, the growth, the level, the share — the great motions of the whole economy as it moves within the institutions, booming and slumping, expanding and dividing; and among them the growth, where the prosperity that the architect has traced to inclusive rules will be measured directly. And there are the behaviors — the bias, the game, the norm — the human nature of the people who design the rules and live within them, who do not always choose as the price families supposed. The argument turns from the institutions that frame the market to the larger motions that move through it and the human nature that animates it. But the foundation is laid. The market is built; the question is only by whom, and for whom.8