Trade and Supply Chains: Mutual Benefit or a New Dependency?

Specialisation can increase prosperity — and create a new tie

Trade exists because it is not sensible for every person, village or country to produce everything. Places differ in natural conditions, knowledge, capital, infrastructure and specialisation. Exchange can therefore lower costs, increase variety, enable scale and broaden access to knowledge and technology.

Current OECD evidence shows that global value chains have not disappeared despite the pandemic, geopolitical tensions and talk of deglobalisation. In real terms, their role in world production was near historical highs in 2024. That matters because modern production cannot simply be broken into fully self-sufficient local units.

Specialisation exchanges some stand-alone capability for access to a network. That is not automatically a problem. It becomes one when the exchange concerns a critical function with no fallback route, when substitutes do not exist or when they cannot be activated in time.

A supply from another country is not automatically more dangerous than one from the next municipality. A local producer may be the only supplier and therefore a large single point of failure, while an international network may contain ten genuinely independent suppliers in different regions.

This article therefore measures dependency structurally. The first question is how many suppliers genuinely exist. The second is whether they are geographically and technologically distinct enough. The third is whether the buyer can switch without lengthy certification, new equipment, new contracts or redesigning the entire product.

OECD evidence finds that most global trade remains relatively diversified, while significant import concentration is increasing. The main problem is therefore not “globalness” itself, but points where many flows converge on a small number of suppliers or countries.

A first-tier supplier can hide the same upstream bottleneck

A firm may have three suppliers on paper and still depend on one source of a critical material, chip, active ingredient or transport node. First-tier diversity is not true redundancy when every supplier relies on the same upstream source.

OECD work on production networks explicitly examines risks propagating through supplier linkages. Natural disasters in one country can affect production elsewhere through imported inputs. The 2026 OECD Responsible Business Outlook also notes that firms often have much better visibility over tier-1 suppliers than deeper tiers, where significant risks may sit.

A practical map must therefore go beyond “who do we buy from?” For critical inputs it should also ask: who supplies our supplier, which ports and networks are used, which standards or patents are required, and which single component can stop the whole service?

Concentration is not only one monopoly producer. It can be geographic, when several suppliers operate in the same region and face the same flood, drought or conflict. It can be transport concentration, when different shipments use the same port, canal, bridge or rail connection. It can be technological, when everyone depends on the same proprietary platform or patented component.

It can also be financial or organisational: several brands have the same owner, several retailers buy from the same wholesaler, or several local contractors need the same specialist service provider. Counting logos is therefore not the same as measuring real diversification.

IMF research from 2025 compares supplier diversification to a portfolio: not only the number of sources matters, but also how strongly their risks move together. A second supplier is most valuable when it is not exposed to the same shock.

Criticality determines how much redundancy makes sense

Not every supply dependency matters equally. If a decorative product is unavailable for three days, the result is inconvenience. If a medicine, drinking-water component, transformer part or fuel for emergency transport is unavailable for three days, the same logistics failure is a different problem.

The first measure is therefore time to serious consequence. Then comes substitutability: can another material, brand or technology be used? The third test is switching time. An alternative supplier requiring nine months of validation is not a real backup for a seven-day disruption.

IMF modelling suggests that targeted diversification is most valuable for inputs that are more exposed to shocks, lie upstream in the production chain and are difficult to replace quickly because of market or production rigidities. Redundancy should follow the consequence of failure, not a political slogan.

Efficiency and resilience have different prices

The cheapest chain in normal times often minimises inventories, spare equipment and idle capacity. That improves efficiency but leaves less room for error. A second supplier, extra inventory or local standby capacity is a cost until the primary route fails.

It is therefore useful to view redundancy as an insurance premium. Duplicating everything is not rational. Paying somewhat more can be rational where failure would cause disproportionate harm or switching would be slow. IMF research explicitly frames this as a resilience-efficiency trade-off.

“Local Economy Without Autarky” already warned that complete relocalisation is not free. OECD modelling finds that broad reshoring could sharply reduce trade and global GDP without consistently improving stability. Resilience is therefore not maximum inventory or maximum domestic production, but deliberate backup at the right points.

Standards and substitutability reduce switching costs

“Shared Standards Without a Common Ruler” showed how open standards and interoperability allow different systems to cooperate. In supply chains they have another role: they reduce the cost of changing suppliers. If two producers use compatible interfaces, data formats or verifiable quality standards, an alternative becomes more real.

Conversely, a proprietary interface, exclusive licence, opaque certification route or component that requires redesigning an entire system can turn formal competition into practical lock-in. Several suppliers may exist on paper while switching remains prohibitively expensive.

The OECD's 2026 work on digitalised supply chains emphasises interoperability, data standardisation and legal certainty for electronic transactions. “Shared Standards Without a Common Ruler” and this article therefore meet at one point: a standard is valuable when it increases the number of real routes rather than narrowing them to one gatekeeper.

Trade remains mutual benefit only while power is not one-sided

Every supply chain is also a bargaining relationship. A buyer representing nearly all of a small supplier's revenue can dictate terms. The sole supplier of a critical component can do the same to the buyer. Dependency can therefore be mutual, asymmetric or almost entirely one-sided.

That does not mean bargaining power is itself abuse. It means that price is not the only variable: we should also measure exit options, contract duration, alternative buyers and suppliers, data ownership, exclusivity and switching costs. “Exit, Voice, and Loyalty: What Do We Do When a System Fails?”'s right to exit becomes very concrete in economic life: how much time and money does it take to leave?

For essential goods the question is sharper. This article retains the manuscript's warning that food, water and energy are not ordinary consumer goods because a prolonged failure quickly changes bargaining power. The answer is not to close trade; it is to ensure that a critical need does not depend on one external switch.

Diversification should be targeted, not ritualistic

If a product is cheap, non-critical and offered by many substitutable suppliers, strategic stockpiles or a local production line may make little sense. If it is a medicine, a water-system input, a key transformer, a staple food or a digital service on which other functions depend, the threshold for backup is different.

A sound strategy therefore uses a portfolio of measures: several source countries for one input, local fallback capability for another, inventory for a third, standardised substitution for a fourth, a pooled regional reserve for a fifth, and only a contractual priority-supply arrangement for a sixth.

OECD research on natural-disaster exposure also warns that optimising for one type of risk can increase another. Moving all sourcing from a geopolitically risky region into one flood-prone region is not necessarily progress. Real diversification reduces the correlation of risks rather than merely changing the flag on the container.

Local, regional and global should form a portfolio

“Local Economy Without Autarky” established the rule “local roots, open links.” this article extends it to a network: a resilient system can combine local capability for rapid fallback, regional partners for greater capacity, and wider international trade for specialisation and diversification against local shocks.

This matters especially for small countries and regions. OECD evidence from 2026 shows that global value chains remain deep and that many production processes combine physical inputs, services, software, finance and logistics from several countries. Complete self-sufficiency would often destroy the diversity that can protect against a local shock.

The key is that wider links do not erase all nearby capability. A network is resilient when it has several levels and several routes — not when everything is in one village, and not when everything is at one distant end of the world.

Practical audit of supply dependency

For a critical good, service or input, a community, firm or institution can use the following audit:

1. What happens if supply stops tomorrow? How many hours, days or weeks do we have before serious consequences? 2. How many genuinely independent suppliers do we have? Not merely brands or resellers. 3. Do the suppliers share the same upstream source? Material, factory, port, cloud, patent, standard or service? 4. How correlated are their risks? The same country, river basin, weather zone, political system or transport route? 5. How long does switching take? Contracting, certification, testing, tooling, data migration? 6. Can the input be replaced by another material, component or process? 7. What is the cheapest useful backup? Inventory, second supplier, local capacity, pooled regional reserve or alternate route? 8. Who has the greatest bargaining power? Can one side abruptly change terms because the other cannot realistically exit? 9. Do standards increase substitutability or create lock-in? 10. When did we last test the map in practice? Does the backup actually work when we try to use it?

The audit is not meant to eliminate all dependency. That would also eliminate much cooperation. Its purpose is to distinguish productive interdependence, where choice, substitutability and multiple routes exist, from critical one-sided dependency, where one failure quickly becomes coercive.

Prebujenje v Naravni zakon warns that a person or community becomes vulnerable when the basic conditions of life are handed to a single external structure without a real alternative. This article keeps that core concern while connecting it to current trade evidence: open supply networks can create enormous mutual benefit, but we need to know where they are concentrated.

The best defence is not an economic wall. It is network visibility, multiple supply routes, substitutable standards, targeted reserves, nearby capability where failure is critical, and contractual relations from which it is realistically possible to exit.

The difference between beneficial trade and dangerous dependency can therefore be condensed into one question: if one link disappears, can the system change direction — or must it accept whatever terms remain because there is no other route? “Mobility and migration between communities” will move the same question from goods to people: mobility and migration between communities and the real ability of a person to change the system in which they live.