A large share of what appears in news outlets was reported by a wire service rather than by the outlet publishing it. The arrangement is old and structurally important.
The model shares one reporting cost
Maintaining correspondents across many countries is expensive, and few individual outlets could justify it for stories most of their readers would find marginal.
An agency employs those correspondents once and sells the output to many subscribers, so each pays a fraction of what independent coverage would cost.
The original agencies were formed by groups of newspapers for exactly this reason, pooling the expense of gathering reports from distant places.
Copy is written to be reused
Wire copy is written in a plain, neutral register, without the voice or framing a particular publication might apply, because it must suit outlets with different audiences.
The structure places essential facts first, so an editor can cut from the bottom to fit available space without losing anything necessary.
That convention predates digital publishing and originated in the constraints of print layout and unreliable transmission, but it survives because it remains useful.
Speed is the competitive dimension
Agencies compete largely on being first with confirmed information, since subscribers pay for the ability to publish quickly.
Financial markets sharpen this further, because certain figures move prices and the value of receiving them fractionally earlier is measurable.
The pressure creates a recognised risk, since verification takes time and being first with something wrong is more damaging than being second with something right.
Subscribers adapt rather than reprint
Outlets rewrite headlines, add local context, combine wire copy with their own reporting, or run it substantially unchanged depending on the story and their resources.
Attribution conventions vary, and a byline crediting the agency may appear or the material may be folded into a staff-written piece with a credit line.
Readers therefore encounter the same underlying reporting across many outlets, which is one reason coverage of distant events can look strikingly uniform.
Concentration is the standing criticism
Because a small number of agencies supply so many outlets, their editorial choices about what to cover propagate widely and quietly.
A story an agency does not staff is unlikely to appear anywhere that relies on it, so the absence is as consequential as the coverage.
Defenders note that the alternative is not more coverage but less, since without pooling, most outlets would carry no international reporting whatsoever.