Exclusive games look inefficient, since a publisher restricts a title to a fraction of the available buyers. The logic makes sense once the console business model is clear.
Hardware is not where the money is
Consoles are frequently sold at or near their manufacturing cost, especially early in a generation when components are expensive and volumes are still building.
The return comes afterwards, through a share of every game sold, subscription revenue and storefront transactions across the machine's life.
That structure means the platform holder needs installed machines above all, and each additional console represents years of downstream revenue.
Exclusives move hardware in a way marketing cannot
Consoles from the same generation are broadly comparable in capability, so a buyer choosing between them is largely choosing between libraries.
A game available on only one machine converts interest in that game into a hardware decision, which is the single most reliable lever a platform holder has.
The cost of funding the game is weighed against the consoles it sells and everything those owners spend afterwards, not against the game's own sales alone.
Funding takes several different shapes
The strongest form is ownership, where the platform holder owns the studio outright and its output is permanently tied to the hardware.
Weaker forms include paying for a timed window, funding development in exchange for a period of exclusivity, or securing exclusive additional content on an otherwise multiplatform game.
Each buys a different amount of differentiation for a different price, and timed arrangements have become more common as development costs have risen.
The economics have shifted against permanent exclusivity
Large productions now cost enough that restricting them to one platform requires the hardware benefit to be very large indeed.
Publishers have responded by releasing formerly exclusive titles elsewhere after a period, capturing hardware sales first and the wider market later.
That pattern reduces the value of exclusivity over time, since buyers who expect a later release can simply wait.
Subscription services changed the calculation again
Where a platform's main product is a subscription rather than a console, the goal becomes subscriber numbers, and subscribers can be reached on hardware the platform does not sell.
Exclusive content still matters in that model, but exclusivity to a service is not the same as exclusivity to a machine, and the two have begun to separate.
The result is a market where fewer games are permanently locked to one console and more are locked, temporarily, to one place of first release.