A firm entering an unfamiliar market faces a choice between building the necessary capabilities organically and acquiring an incumbent that already possesses them. The trade-off is usually framed as speed versus cost: acquisition delivers an established position immediately but at a premium, while organic entry is cheaper per unit of capability but slow. Strategists argue this framing misses what is often the decisive variable—the rate at which the target market itself is changing. In a stable market, an acquired position is a reliable asset: the customer relationships, distribution, and know-how the incumbent has accumulated will retain their value while the acquirer integrates them. In a rapidly shifting market, the same assets may be depreciating even as the deal closes, so the acquirer pays a premium for a position that is eroding under it; here organic building, though slower, lets the entrant assemble exactly the capabilities the emerging market rewards rather than inheriting those suited to the market that is passing. A further complication is that acquisitions transfer not only capabilities but the routines and culture that produced them, and these can prove resistant to the very changes the acquirer hoped to ride. The implication strategists draw is not that one mode dominates but that the make-versus-acquire choice should turn less on the immediate price of capability than on whether the capabilities in question will still be the right ones by the time they are put to use.