Business is an infinite game with no fixed finish line
Sinek's foundational distinction, borrowed from game theory, separates finite games — fixed players, agreed rules, a defined endpoint and winner, like chess or a football match — from infinite games, which have no fixed endpoint, changing players entering and leaving over time, and no universally agreed rulebook, like most of business, politics, or life itself. You cannot "win" an infinite game because there's no final buzzer; you can only keep playing, or eventually be forced out of it.
His critique is that most business leaders, trained on metrics, quarterly targets, and competitive rankings, unconsciously import finite-game thinking into what is actually an infinite contest — treating a single earnings report or a competitor's move as if it settles something permanently, when the game simply continues regardless of any one outcome.
This mismatch, he argues, is the root cause of a great deal of short-termism: leaders optimizing for a score in a game that doesn't actually have a final score to optimize for.
Takeaway: before chasing a "win," ask whether you're actually in a game that has an ending — most business situations don't.