Official Session 07 · Sustaining Competitive Advantage
Session 06 asked how a firm creates an advantage. This session asks the harder question: once a rival sees you winning, what actually stops them from doing the same thing? Two mechanisms do almost all the work — deterrence (making imitation look unattractive before a rival tries) and preemption (occupying the position before they can).
The Assigned Reading
Ghemawat, P., & Pisano, G. P. (1997). "Sustaining Superior Performance: Commitments and Capabilities," Harvard Business School Note. Their argument: sustained advantage rarely survives on a single clever move — it survives on commitments (large, hard-to-reverse investments that signal seriousness to rivals) and capabilities that compound faster than they can be copied. A commitment is credible specifically because reversing it would be expensive; that's what makes it a deterrent rather than just a decision.
Case · Patagonia (HBR)
The commitment
In 2022, Yvon Chouinard transferred Patagonia's ~$3B ownership to the Holdfast Collective — a trust structure that makes environmental mission legally irreversible, not just a marketing claim. A rival can copy Patagonia's supply-chain ethics messaging in a quarter; no rival can copy an ownership structure that took decades of brand equity to make credible.
Why imitation is deterred, not just difficult
A publicly traded competitor attempting the same move would face shareholder lawsuits and a share-price hit — the commitment isn't just hard to copy operationally, it's structurally unavailable to firms with different ownership. That's deterrence: the rival doesn't even attempt the imitation, because the cost of trying is visible upfront.
Contrast this with a capability-based defense: Patagonia's Worn Wear repair-and-resale program compounds — every year of operating it builds logistics know-how and customer trust a new entrant would need years to replicate, even with unlimited capital. Commitments deter by raising the cost of trying; capabilities deter by raising the time it would take to catch up even if a rival tried today.
New Tool
Describe an advantage you think a company has. Answer three questions honestly — most "moats" people cite fail at least one.