The Shifting Boundary
Transaction Costs: Why Tesla Builds Everything and Walmart
Every company makes one hidden decision that determines its entire structure — build it ourselves, or buy it from someone else? This Nobel Prize-winning idea explains why Walmart outsources its shipping while Tesla built its own charging network from scratch.
📘 WHAT YOU'LL LEARN
What transaction costs are and why they determine where every company draws its boundary
How the Make vs. Buy decision works using real-world comparisons students already know
Why technology is systematically shrinking companies by collapsing market friction
Three critical questions every entrepreneur must ask before building anything in-house
📦 WHAT'S INCLUDED
14-page visual PDF covering the full transaction cost framework
Make vs. Buy scale diagram with transaction cost breakdown
Walmart vs. Tesla side-by-side case study and decision comparison table
Technology Shrinks the Firm before/after boundary visual
Three real-world boundary rewrite examples: AWS, Upwork, and Foxconn
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