Bidding cities present economic projections, and the academic literature examining outcomes afterwards tells a different story.
Cost overruns
Studies examining every Games over several decades find cost overruns in essentially every case.
Which is a remarkably consistent finding across different countries and organisational structures.
The magnitude varies enormously, with some events several times over budget.
Why estimates are wrong
Bids are prepared to win rather than to be accurate.
Which produces optimistic assumptions that are not corrected because the commitment is already made.
Once construction begins, the deadline is immovable, which removes the usual cost discipline entirely.
Legacy claims
Projected tourism increases, infrastructure benefits and economic activity.
Which studies have generally found to be overstated.
Tourism during the Games frequently displaces tourism that would have occurred anyway, and long-term increases are difficult to identify.
The venue problem
Facilities built for a two-week event with no ongoing demand.
Which produces maintenance costs for decades or abandonment.
Documented cases of unused venues exist from multiple Games.
What has worked better
Using existing venues, temporary structures and facilities with identified post-event use.
Which has been increasingly emphasised in reform agendas.
Recent host selections have prioritised bids relying on existing infrastructure.
The bidding decline
Several cities withdrew bids following referendums or political opposition.
Which reduced the field substantially and prompted structural changes to the selection process.
Awarding multiple Games simultaneously was a response to a shortage of willing hosts.
Displacement
Construction has displaced residents in several host cities, documented by housing organisations.
Which is a cost borne by specific people rather than by budgets.
The counterargument
Non-economic benefits — civic pride, sporting participation, international profile — are real and hard to quantify.
Which is a legitimate position, and it should be argued on those grounds rather than on projections that consistently fail.
Security costs
A substantial and growing share of total expenditure.
Which has risen considerably over recent decades for reasons unrelated to sport.
These costs are frequently excluded from headline budgets and appear in separate government accounts.
Revenue distribution
Broadcast and sponsorship revenue is shared according to defined arrangements.
Which means the host does not retain all commercial income.
The proportion retained by hosts has been a recurring negotiating point.
Winter Games specifics
Venue requirements are more specialised and post-event use is harder to find.
Which has narrowed the pool of viable hosts considerably.
Climate change is reducing the number of locations able to host reliably, which is documented in published assessments.
Reform measures
Bidding processes have been changed to reduce cost and to encourage use of existing facilities.
Which has produced measurably cheaper recent bids.
Whether costs at delivery follow the bids downward is the open question.
Temporary infrastructure
Demountable seating and structures reduce legacy cost substantially.
Which several recent Games have used extensively.
The upfront saving is smaller than expected and the long-term saving is considerable.
Transport investment
Frequently the largest infrastructure component and the one with the clearest lasting value.
Which is why hosts point to it when defending expenditure.
Whether it would have been built anyway is the counterfactual question that determines the argument.
Volunteer labour
Games depend on large volunteer workforces.
Which represents an unpriced cost and a genuine community benefit.
Volunteer experiences are generally reported positively in post-event surveys.
Athlete village
Converted to housing afterwards in most recent Games.
Which is the clearest legacy success where the housing market can absorb it.
Affordability commitments made at bid stage have frequently not been delivered.
Assessing a bid
Compare projected costs against historical overruns rather than taking projections at face value.
Public consultation
Referendums on bids have generally rejected them where held.
Which is a consistent enough pattern to be informative about public assessment of the case.
Bids proceeding without public votes have faced different forms of opposition.
Closing
The economic case has been examined repeatedly and does not hold up on its own terms, which means the argument has to be made on other grounds.
Other major events
Similar patterns of cost overrun and overstated legacy appear across large sporting events generally.
Which suggests the problem is structural to how such events are bid for and delivered.
The research literature covering world championships and continental tournaments reaches broadly similar conclusions.
Governance and accountability
Organising committees are frequently structured outside normal public accountability mechanisms.
Which limits scrutiny of decisions during delivery.
Post-event audits have identified this repeatedly as a factor in cost escalation.
Where to read more
Academic assessments of cost and legacy are published openly and are considerably more informative than bid documents.
A closing thought
Hosting may still be worth doing for reasons that are not economic, and that case deserves to be made honestly rather than dressed up in projections that have failed everywhere they have been tested.
The summary
Costs exceed projections consistently, legacies underdeliver relative to claims, and reform efforts have improved bids more than they have improved delivery.
Which is the honest starting point for any discussion about whether to host.