Supplier Dependence
Customer concentration gets attention, but dependence on a single supplier can be just as damaging. This lesson looks at the input side of a business.
Why this matters for beginners
A supplier with no alternative can raise prices, prioritise other buyers or fail entirely. Each outcome hits margins or revenue directly.
Main explanation
Supplier power rises when few alternatives exist, when qualifying a new supplier takes a long time, or when the input is protected by patents or scarce capacity.
The consequences are visible in margins. A dependent buyer absorbs cost increases because refusing means halting production.
Concentration risk also runs through geography. Several suppliers in one region can fail together in a disruption, which is a single point of failure in disguise.
Reports disclose this in the risk factors and supplier sections. Language about qualifying second sources or long lead times is the signal to read carefully.
Example using a real company
A device maker relying on one specialised component supplier faces production limits when that supplier allocates capacity to a larger customer first.
- →Single-source component: a price increase must be accepted or production stops.
- →Geographic concentration: three suppliers in one region can be disrupted by one event.
Common beginner mistakes
- ✕Checking customer concentration but never supplier concentration.
- ✕Counting suppliers without checking whether they share one region.
- ✕Assuming a new supplier can be added quickly.
Key terms
- Single sourcing
- Relying on one supplier for a critical input.
- Qualification
- The testing process before a new supplier can be used.
- Lead time
- The delay between ordering an input and receiving it.
Key takeaways
- 01Supplier power transfers profit away from the buyer.
- 02Multiple suppliers in one region is still concentration.
- 03Long qualification times make dependence harder to escape.
Check yourself
- 01Depending on a single critical supplier can compress margins.
- 02Having several suppliers always removes concentration risk.
- 03Long qualification times make switching suppliers harder.
Try the concept on a real company
Open a hardware company in the Analyzer and read the risk section for language about component supply, capacity allocation and lead times.
Educational examples only. Not buy or sell recommendations.