What is the FCPI Index?

The FCPI Index exists to answer a specific question:

When does a platform, infrastructure layer, or service stop being a useful component and become a choke point at a layer where outcomes are made effective, binding, or hard to reverse?

That is the point at which dependency becomes leverage.

Definition

The FCPI Index measures the degree to which an entity occupies a finality-bearing choke point within a broader system.

In this journal, finality does not refer only to legal settlement in finance. It refers more broadly to the point at which an action becomes effective, recognised, routed, executed, stabilised, or difficult to reverse.

Depending on the system, that may include:

• payment settlement,
• identity assertion,
• cloud access,
• software distribution,
• communications routing,
• satellite connectivity,
• model access,
• command, control, or compliance layers.

The common feature is the same: control at that layer gives an actor disproportionate power over whether others can complete the relevant activity.

What the FCPI Index measures

The FCPI Index is designed to measure six structural features:

1. how close an entity sits to finality;
2. how critical the dependent function is;
3. how wide and concentrated dependency has become;
4. how difficult it is to substitute the function;
5. how hard transition would be under realistic time pressure; and
6. how much governance or coercive leverage control of that layer confers.

Together, these features help distinguish between three very different things:

• a useful provider,
• an important provider, and
• a strategic choke point.

What the FCPI Index is not

The FCPI Index is not a reputation score.
It is not a moral judgment.
It is not a prediction that a platform will abuse its position.
It is not a substitute for antitrust or resilience analysis.

A benevolent or high-performing company can still occupy a dangerous choke point. A widely criticised company can still be replaceable. The index measures structural position, not intent.

Why finality matters

A system becomes especially consequential when it sits at a point where an outcome becomes difficult to avoid, reroute, or reverse.

A platform can dominate attention and still remain replaceable. A much smaller system can become strategically decisive if it occupies a finality layer.

That is why size alone is not enough. The key issue is whether the entity sits close enough to execution, authorisation, settlement, routing, or recognition that denial or reprioritisation materially changes what others can do.

Limits of the index

No index should pretend to eliminate judgment. The FCPI Index is only as good as its unit of analysis, evidence, and assumptions.

A score must therefore always be read with:

• a clearly defined function,
• a stated time horizon,
• a confidence level, and
• a short narrative explaining the score.

That discipline matters more than false precision.