# Who actually holds the power in a manufacturing value chain
A sheet of glass thinner than a credit card, costing Apple an estimated few dollars to a few tens of dollars per unit, has given its maker leverage over the most valuable consumer brand on earth. Corning's Gorilla Glass sits on hundreds of millions of smartphones, and for years phone makers had almost nowhere else to go. That is not a fluke. It is a lesson in how power in manufacturing has nothing to do with logo size and everything to do with who can be replaced.
This lesson breaks down how to read power in any manufacturing value chain: who the players are, what gives them leverage, and how that leverage shows up in who keeps the margin.
Every manufacturing chain has a recurring set of roles, even if the names change by industry.
The mistake most people make is assuming power flows downhill from the brand. It often flows the other way.
Power in a value chain comes down to three questions:
1. Can the buyer switch suppliers easily?
Corning's Gorilla Glass required proprietary glass chemistry and manufacturing processes built up over more than a decade. Competing suppliers exist (AGC, Schott), but requalifying a new glass supplier for a flagship phone means months of durability testing, tooling changes, and risk to a product launch that generates billions in revenue in its first weekend. Switching cost, not brand size, is the leverage.
2. Is the input scarce or hard to substitute?
Taiwan Semiconductor Manufacturing Company (TSMC) makes the most advanced logic chips in the world. As of 2024 estimates, TSMC produced the large majority of the world's most advanced sub-10-nanometer chips. Apple, Nvidia, and Qualcomm design chips, but only a handful of foundries can actually fabricate them at leading-edge nodes. That concentration hands TSMC pricing power that no fabless (design-only) chip company can match.
3. Who owns the customer relationship?
Brands usually win this one, which is why "no switching cost" suppliers (commodity plastics, generic fasteners) stay margin-poor no matter how essential their part is physically. A bolt is replaceable. A calibrated glass coating process is not.
Put these together and you get a simple diagnostic: power sits wherever scarcity and switching cost are highest, not wherever the logo is biggest.
Margin distribution in manufacturing chains tends to cluster at two points: design/brand and scarce upstream chokepoints. The squeezed middle is usually commodity assembly and generic components.
Take the smartphone as an illustrative structure (based on long-running teardown estimates from firms like TechInsights and Counterpoint Research, not exact current figures):
Worked example (illustrative, using rounded estimates):
If a phone retails for $1,000 and the BOM is 30 percent ($300), and the display and chipset together account for roughly half the BOM ($150), that single chokepoint captures more value than the entire assembly step, even though assembly touches the physical product for hours and the chip touches it for seconds. Scarcity beats touch-time, every time.
This is why Foxconn, despite assembling hundreds of millions of devices a year, has historically operated on relatively thin margins (public filings have shown low single-digit operating margins in many years), while TSMC has posted operating margins frequently estimated in the 40 percent range in strong years. Same value chain, wildly different power.
Regulators do not make products, but they reshape who has power by controlling access and compliance costs.
Regulation, in other words, can manufacture scarcity artificially, and that is a deliberate policy tool, not just a compliance burden.
For a solid primer on how supply chain concentration became a policy issue, see the Council on Foreign Relations backgrounder on semiconductor supply chains.
Knowledge check
1. Corning was able to capture significant value from smartphone makers despite being a relatively small supplier. What does this illustrate about power in a value chain?
2. Why is the assumption that 'power flows downhill from the brand' identified as a common mistake?
3. A Tier 1 automotive supplier provides a highly specialized braking system used by multiple automakers, with no comparable alternative available in the market. Based on the framework in the lesson, what would you expect?
4. Select ALL correct answers about contract manufacturers (CMs) based on the lesson's framework.
Select all the correct answers.
5. Select ALL correct answers about factors that can give a player leverage in a manufacturing value chain.
Select all the correct answers.
Power is not static. Three forces move it:
Multi-sourcing strategies. After chip shortages disrupted automakers in 2021 to 2022, companies like GMGMGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.View full definition → and Ford began qualifying multiple chip suppliers and even designing their own silicon, deliberately reducing single-supplier leverage.
Vertical integration. Tesla brought battery cell development in-house and pursued direct relationships with mining companies for lithium, cutting out layers of supplier leverage that traditional automakers still depend on.
Geographic diversification. The "China plus one" trend, where brands add manufacturing capacity in Vietnam, India, or Mexico alongside China, is a direct response to concentration risk, spreading assembly power across more players so no single contract manufacturer or country holds too much leverage.
Watch for these signals when assessing any manufacturing relationship: is the number of qualified suppliers shrinking or growing? Is the buyer investing in its own capability upstream? Is a regulator about to change who can legally supply a market?
🎬 [VIDEO: "How Apple Controls Its Supply Chain" - https://www.youtube.com/results?search_query=how+apple+controls+its+supply+chain - a good overview of how a brand manages supplier leverage across contract manufacturers and component makers; search for reputable business/explainer channels covering Apple's supply chain strategy]