⚠ Three Is Still Enough for a Price WarHigh threat

The three-player structure is the foundation of the moat, but it is a behavioral foundation, not a structural guarantee — and three rational competitors can become three desperate ones fast. The discipline that makes the DRAM oligopoly profitable rests on each player choosing restraint over share-grabbing, and that choice has broken down repeatedly in memory's history: when a maker adds capacity to chase share, or when a demand shock leaves everyone with too much supply, the oligopoly can collapse into exactly the price war it usually avoids, and prices plunge below cost. This is not hypothetical — memory has endured such busts again and again, most recently in the fiscal 2023 down-cycle that cost Micron nearly six billion dollars¹.

The risk is intrinsic to a commodity: when the product is essentially identical across makers, there is no brand or switching cost to hold prices up, so pricing lives and dies by the supply-demand balance, which the three players collectively control but do not perfectly coordinate. A single member's misjudgment, an aggressive push for share, or a sudden demand collapse can turn the disciplined oligopoly into a bloodbath overnight. The consolidation to three has genuinely raised the industry's average profitability and shortened its busts, and the rational behavior has mostly held in recent cycles. But an investor must never mistake oligopoly discipline for a structural moat: it is a fragile, cyclical peace among three commodity producers, capable of breaking whenever the incentives shift — and when it breaks, the losses are severe.