Barrier: durable protection from competitive attack
Both required: moat without castle is worthless
Warren Buffett: "economic castles with unreachable moats"
"You have to have a pretty good understanding of why it's a castle and not a shack."
The Framework
7 Powers: From Early Stage to Stability
Counter Positioning: Novel way to satisfy existing need with more value
Scale Economies: Fixed cost advantage spread across more users
Switching Costs: Friction in changing from your product to another
Network Economies: Value increases as more users join
Branding Power: Premium pricing from perception alone (late stage only)
Process Power: Operational excellence at scale (late stage only)
Resource Power: Durable ownership of valuable assets
Early Stage Powers4
Late Stage Powers2
Power ProgressionDifferent powers are available at different business stages. Counter positioning is always available; branding and process power only appear after you've reached stability.
Path to Power
The Startup Journey: Which Power First?
Origination: Start with counter positioning—novel business model against incumbents
Takeoff: Rapid growth phase. Awareness of technology shifts and adjacent markets is critical
Stability: Defend by understanding and protecting your source of power
Transformation: Many iconic businesses (AWS, Apple iPhone, Intel CPUs) have second, third, fourth acts—restart the process
Netflix's lesson
Netflix fought Blockbuster on scale economies (spreading content cost across more subscribers). But Blockbuster copied their UI—because UI is mimicable, not a moat. Scale was the real power.
Uber's evolution
Uber thought they were a global transportation company. They're actually a geographically specific scale economy business. Expansion only worked where they had local scale advantage.
Common Mistakes
What Founders Get Wrong
Thinking brand recognition is branding power—you can buy that with ads
Believing scale economies work through data—possible but rare and hard
Confusing operational excellence with power—it's mimicable, not a moat
Assuming speed and execution are defensible—they're table stakes, not barriers
The hard truthUnderstanding whether you have a source of power takes weeks of analysis, even for strategists. Founders are optimistic by necessity, but they often conflate "important to our business" with "a durable moat."
Contrarian Truths
What Most Leaders Believe But Shouldn't
✗Think about power after product-market fitINSTEAD →✓ Strategic questions matter even pre-PMF. Ask: do the characteristics of this business tilt toward power or away from it?
✗Strategy = detailed planning for next yearINSTEAD →✓ Strategy is about long-term value creation (NPV). It's fundamentally about understanding what makes a castle, not a shack.
✗Branding power is accessible at any stageINSTEAD →✓ Branding power only emerges at stability phase. Early brand-building is table stakes, not power.
✗AI creates an eighth power or invalidates the sevenINSTEAD →✓ AI is powerful technology, but power dynamics remain: scale, switching costs, network effects all still matter.