Worked example · EX:economics-and-market-foundations/trace-entry-from-announcement-to-discipline

Trace entry from announcement to competitive discipline

Test legal, scale, network, switching, capital, and strategic conditions against timely, likely, and sufficient entry rather than counting announcements.

Updated Aug 7, 2026 Review due Nov 7, 2026
Worked-example setupScope and assumptions
  • BayLink is original fiction and the packet describes a proposed entrant, not an established market outcome.
  • Competitive discipline requires entry or expansion that is timely, likely, and sufficient for the stated customer and period question.
  • Accounting expenditures and asset balances are evidence inputs, not self-executing economic barrier classifications.
Period
One fictional procurement cycle and the following expansion horizon
Units
Qualitative entry milestones and evidence
Rounding
Exact binary evidence flags

BayLink announces that it will enter a network service before the next procurement cycle. The announcement is not yet competitive discipline.

Trace the milestones

BayLink must obtain authorization, finance a partly irrecoverable build, interconnect with an installed network, persuade customers to switch, reach a minimum service scale, and operate at terms that remain viable after incumbents respond. Each step needs a date, evidence source, contingency, and failure mode.

Classify the conditions without assuming every cost is a barrier:

  • authorization and scarce rights are legal or institutional conditions;
  • minimum network scale and density are technological and scale conditions;
  • compatibility and installed base create coordination or network conditions;
  • customer migration and contract termination create switching conditions;
  • irreversible construction and delayed cash flows create capital and recoverability conditions; and
  • likely incumbent repricing, bundling, or capacity response enters the expected-return analysis.

Apply the three-part test

“Timely” asks whether discipline arrives within the decision horizon. “Likely” asks whether the economics and evidence support actual entry, not aspiration. “Sufficient” asks whether the entrant can serve enough relevant demand to constrain terms.

Capitalized construction, expenses, commitments, debt, and cash forecasts can inform the analysis. Accounting classification does not decide whether the commitment is economically sunk, whether customers will switch, or whether entry is sufficient.

The controlled conclusion is conditional: BayLink may be technically capable of entry while still failing one or more timing, likelihood, or scale tests.

Verified calculation · economics foundations analysis

The curriculum loader recomputed this example before it entered the site build. Expand any structured input to inspect the stated facts.

claim audits
1 field
Inspect data
{
  "entry_announcement": {
    "causal_design_supplied": 0,
    "decision_authority_identified": 0,
    "feasible_alternatives_compared": 0,
    "model_assumptions_stated": 1,
    "observation_supplied": 1,
    "value_criterion_stated": 0
  }
}

Recomputed result

Values recomputed by the curriculum loader
MeasureValue
causal claim supported0
descriptive claim supported1
model implication supported1
recommendation supported0
unsupported causal jump1