The price of fuel produces outrage when it rises and relief when it falls. Steve Coll's book is about everything that happens before it reaches the pump.

Pull into a gas station anywhere in America and you are, without quite knowing it, at the frontier of one of the most consequential power structures in modern history. The transaction is mundane: you tap a card, you squeeze a handle, numbers tick upward. What you are reacting to — the number, its direction, its relation to last week's number — is the one data point the system makes available to you. Everything that produced it remains elsewhere, in a register that never reaches the forecourt.

Coll's book is the closest thing we have to an account of what happens out there. Its subject is ExxonMobil — formed in 1999 when Exxon absorbed Mobil, quietly reassembling much of the original Standard Oil trust that antitrust law had broken apart eighty-eight years earlier. The Sherman Act had dissolved Standard Oil as a democratic act: a society deciding that some concentrations of power were incompatible with self-governance. What the market rebuilt, incrementally and without drama, was something of comparable scale — reconstituted not through any single audacious move but through the accumulated logic of an industry that rewards size above almost everything else. That logic is worth understanding, because it explains the kind of cultural actor big oil has become.

The structural fact at the centre of that logic is reserve replacement. Oil majors do not simply sell fuel — they own the geological right to future fuel, and those booked reserves determine the stock price. You must replace what you pump every year, or the corporation slowly dies. This is not a financial abstraction. It is the reason ExxonMobil has operated in some of the world's most difficult political environments — signing agreements with governments whose human rights records made the partnerships, at minimum, uncomfortable to defend.

It is the reason the corporation operates less like a business navigating the world's political geography and more like a sovereign power reshaping it — negotiating with states, intelligence services, and militaries as a peer rather than a supplicant. When the oil is in Equatorial Guinea or Chad or the Russian far east, the corporation goes there, and works backward from that fact through whatever political and moral costs attach to it.

What this produces, culturally, is a particular kind of actor: one that operates across sovereign borders with the resources of a state but without any of a state's accountability to the people it affects. C. Wright Mills, writing in 1956, described an American power elite so interlocked that policy was effectively made before it reached any democratic forum. Private Empire is an anatomy of how that structure functions in practice — not through conspiracy but through the natural convergence of people who share a worldview and have concluded that what is good for the balance sheet is essentially what is good for the country. The line between private interest and state function had not been erased, but become, in practice, very difficult to locate.

The deeper cultural insight, though, is not about the corporation. It is about the rest of us. People have organised their lives — their geography, their transport, their heating systems — around the assumption of cheap and available oil in ways that make the question of who controls it feel abstract and somehow beside the point. The price at the pump produces outrage when it rises and relief when it falls, but rarely the more fundamental question: how did we come to live inside a system where this matters so much, operated by actors we know so little about? The most effective form of power is the kind that has made itself a precondition of ordinary life — so structural, so embedded in the routines and infrastructures of the everyday, that imagining outside it feels unrealistic rather than urgent.