IESET.
Hypotheses·institutional quality·natural_monopoly_private_failure

Privatisation of natural monopolies (electricity transmission, water distribution, rail infrastructure, fixed-line telecommunications) without strong independent regulation fails to improve long-run consumer welfare compared to well-governed public ownership or regulated private provision.

Consumer welfare is measured by real prices, service quality indices, access expansion, and consumer surplus estimates, over 1985-2020 in middle- and high-income countries.

PARTIALengine/runs/natural_monopoly_private_failure

PARTIAL — shape=TWFE, coef=-3.258, p=0.00619; claim direction ambiguous

confidence cueThe result is useful, but not decisive. Treat it as a clue, not a settled conclusion.

policy briefMixed or noisy

In ordinary language

Over a long period, do more market-oriented institutions translate into higher income or productivity, once the comparison looks beyond a single success story?

plain answer

The evidence is suggestive but not decisive. shape=TWFE, coef=-3.258, p=0.00619; claim direction ambiguous

why it matters

This matters because institutional quality claims should change belief only when they survive a pre-declared empirical test.

how the test works

It compares 32 country or place units from 1985 to 2020, using a event study design, with fixed effects for country and year.

what was measured
What changed
  • Privatisation indicator
  • Regulatory independence index
What we checked
  • Real consumer price index
  • Service quality index
  • Access coverage rate
what this does not prove

A single test is not the whole truth. It narrows the claim under a specific sample, time period, and method. Strong policy conclusions need the pattern to survive nearby tests, alternative data, and serious objections.

verification

No evidence packet has been generated yet.

Results

engine/runs/natural_monopoly_private_failure
1007550250198520032020GBRDEUFRAITAESPNLDBEL
illustrative sketch · run pending
No coefficients yet. When the model fires, this chart will show real_consumer_price_index across 32 sampled countries over 1985–2020.
The shapes above are stylised — none of the lines are real data.
Placeholder for natural_monopoly_private_failure. Published chart will be generated from engine/runs/natural_monopoly_private_failure/chart_data.json.

Who has skin in the game — schools predicting on this

7 schools list this hypothesis as a test of their position. The chips below are school-level scoreboard outcomes, not a second hypothesis verdict.

hypothesis verdict vs scoreboard outcome

The banner verdict judges this hypothesis as written. The scoreboard asks whether each school's polarity-corrected prediction was right. Raw status is not a school win: SUPPORTED supports schools that needed SUPPORTED, but refutes schools that needed REFUTED.

Degrowth / Ecological Macroeconomicswins if SUPPORTEDpartial/no-callDemocratic Socialism (Bernsteinian revisionism + modern)wins if SUPPORTEDpartial/no-callEco-Socialism / Red-Greenwins if SUPPORTEDpartial/no-callMarket Socialism (Lange-Lerner tradition)wins if SUPPORTEDpartial/no-callMarxian Political Economywins if SUPPORTEDpartial/no-callMarxism-Leninism (central-planning implementation)wins if SUPPORTEDpartial/no-callModern Monetary Theorywins if SUPPORTEDpartial/no-call

Pre-registration

pre-registered
first-spec commit 5ce4495 · 2026-05-02T19:11:20Z
run generated · 2026-05-04T11:58:24Z

Privatisation of natural monopolies (electricity transmission, water distribution, rail infrastructure, fixed-line telecommunications) without strong independent regulation fails to improve long-run consumer welfare compared to well-governed public ownership or regulated private provision. Consumer welfare is measured by real prices, service quality indices, access expansion, and consumer surplus estimates, over 1985-2020 in middle- and high-income countries.

Falsification criterion — what would disprove this

set before the run · honoured after

This hypothesis is considered falsified if:

The hypothesis is falsified if privatisation without strong regulation shows positive and significant (p < 0.10) consumer-welfare improvements (lower real prices, higher quality, expanded access) comparable to or better than regulated privatisation or public ownership.

formal test & threshold
test:      event_study_natural_monopoly_privatisation_1985_2020
threshold: [object Object]

Method

Template
event_study
Fixed effects
country, year
Clustering
country
Sample
32 countries · 1985 – 2020
Evidence type
associational

Data

VariableSourceTransform
real_consumer_price_index
outcome
constructed:sectoral_price_deflators; oecd:energy_pricestier 5
log
service_quality_index
outcome
constructed:outage_minutes_leakage_rate_rail_punctualitytier 5
level
access_coverage_rate
outcome
world_bank_wdi:EG.ELC.ACCS.ZStier 2
level
privatisation_indicator
treatment
constructed:indicator = 1 for GBR from 1986 onward; CHL from 1988 onward; ARG from 1992 onward; MEX from 1992 onward; PER from 1994 tier 5
indicator
regulatory_independence_index
treatment
wgi:GOV_WGI_RQ.ESTtier 4
level
log_gdp_per_capita
control
world_bank_wdi:NY.GDP.PCAP.KDtier 2
log
fuel_price_index
control
world_bank_wdi:commodity_pricestier 2
log
population_density
control
world_bank_wdi:EN.POP.DNSTtier 2
log
public_ownership_baseline_quality
control
constructed:pre_privatisation_performancetier 5
level

● ready  · ● pending  · ● reconstruct-needed

Detailed result card

Result card — natural_monopoly_private_failure

Verdict: PARTIAL — shape=TWFE, coef=-3.258, p=0.00619; claim direction ambiguous

Pre-registration

  • Claim: Privatisation of natural monopolies (electricity transmission, water distribution, rail infrastructure, fixed-line telecommunications) without strong independent regulation fails to improve long-run consumer welfare compared to well-governed public ownership or regulated private provision. Consumer welfare is measured by real prices, service quality indices, access expansion, and consumer surplus estimates, over 1985-2020 in middle- and high-income countries.
  • Falsification rule: The hypothesis is falsified if privatisation without strong regulation shows positive and significant (p < 0.10) consumer-welfare improvements (lower real prices, higher quality, expanded access) comparable to or better than regulated privatisation or public ownership.
  • Falsification test: event_study_natural_monopoly_privatisation_1985_2020
  • Event year: (not extracted)

Estimate

  • shape: multi_country_twfe
  • coefficient: -3.2583133686575567
  • std_error: 1.1873709180741057
  • p_value: 0.0061871349596887
  • n_obs: 969
  • n_countries: 32
  • r_squared_within: 0.03389333187560595
  • method: linearmodels.PanelOLS (TWFE, country-clustered)
  • dropped_controls_due_to_overlap: []

Variables resolved

  • world_bank_wdi:EG.ELC.ACCS.ZS → access_coverage_rate (outcome, publisher=world_bank_wdi, n=7746)
  • constructed: indicator = 1 for GBR from 1986 onward; CHL from 1988 onward; ARG from 1992 onward; MEX from 1992 onward; PER from 1994 onward; BRA from 1998 onward; ZAF from 1997 onward; POL from 1990 onward; HUN from 1990 onward; CZE from 1993 onward; ROU from 1998 onward; BGR from 2000 onward → privatisation_indicator (treatment, publisher=constructed, n=1152)
  • wgi:GOV_WGI_RQ.EST → regulatory_independence_index (treatment, publisher=wgi, n=5169)
  • world_bank_wdi:NY.GDP.PCAP.KD → log_gdp_per_capita (controls, publisher=world_bank_wdi, n=14066)
  • world_bank_wdi:EN.POP.DNST → population_density (controls, publisher=world_bank_wdi, n=15048)

Variables missing data

  • constructed:sectoral_price_deflators; oecd:energy_prices (outcome, name=real_consumer_price_index)
  • constructed: outage_minutes_leakage_rate_rail_punctuality (outcome, name=service_quality_index)
  • world_bank_wdi:commodity_prices (controls, name=fuel_price_index)
  • constructed:pre_privatisation_performance (controls, name=public_ownership_baseline_quality)

Generated by scripts/run_event_study.py at 2026-05-04T11:58:24+00:00

Strongest opposing argument

Every hypothesis ships with its charitable opposing argument. The framework earns credibility by handling objections at their strongest, not weakest.

Authored framework. Read the transparency note.