The order of the questions
Most market assessments fail by starting with the size of the prize. Market size is the least decision-relevant number in the analysis, because it is the number an operator cannot influence and the one every competitor has already seen.
A useful assessment runs in this order, and stops as soon as an answer is disqualifying.
Can we lawfully operate there, and can we obtain a licence? If the answer is no, nothing else matters. Concession windows, land-based linkage requirements, local ownership rules and suitability disqualifications all live here.
What will it cost to get in and to stay? Application fees, licence fees, certification, local entity and staffing, and the ongoing compliance headcount.
What does the unit economics look like after local tax and local product rules? This is the question that kills most otherwise attractive markets.
How long will it take, and what is the confidence interval on that? A twelve-month licensing timeline that slips to twenty-four changes the business case entirely.
How big is the addressable opportunity, and what share is realistically available? Last, because it only matters if the four questions above have acceptable answers.
What is the exit if it does not work? Rarely asked, and worth asking, because surrendering a licence and repatriating a customer base is not always straightforward.
Sizing honestly
Where a regulator publishes gross gaming revenue by vertical, use it and note the basis. Where it does not, the numbers in circulation come from consultancies, trade bodies and operators, all of whom have reasons for the figure to be larger or smaller than it is.
Four questions sort a usable estimate from a press release.
Is it GGR or turnover? Sports betting turnover is many times its GGR, and quoting turnover as market size inflates the opportunity by an order of magnitude. This confusion is common enough in public discussion that you should assume it until you see the definition.
Is it online, land-based or both? Blended figures in markets with large retail sectors describe an opportunity a purely online entrant cannot access.
Is it the licensed market or the whole market? In a market with 60% channelisation, the licensed opportunity is 60% of the activity, and the remainder is available only to operators willing to be unlicensed.
Who produced it, and what were they arguing for? An estimate produced to support a tax argument, in either direction, is evidence rather than fact.
Population and GDP tell you less than two other things. Gambling participation rate, the share of adults who gamble at all, varies enormously between culturally similar countries. And smartphone penetration plus payment infrastructure quality determine whether the addressable market can actually transact.
The tax question, done properly
Tax is where market assessments most often go wrong, and the error is usually a failure to model the base rather than the rate.
Tax on GGR is the most common online model and the most operator-friendly, because the tax falls on the margin. A 20% GGR tax takes a fifth of gross win.
Tax on turnover falls on every unit staked regardless of outcome, and its effective rate as a proportion of GGR depends entirely on the margin of the product. A 2% turnover tax on a sportsbook holding 7% is roughly 29% of GGR. The same 2% on a casino product holding 3% is around 67% of GGR, which is not a viable business. Turnover taxation therefore penalises low-margin, high-volume products specifically, and it is the single most important structural fact in several major markets.
Tax on deposits or on player spend appears occasionally and needs its own model.
Additional levies frequently sit on top: a mandatory contribution to a research, education and treatment fund, a sports or racing levy, a regulator funding fee, or a problem gambling levy. Each may be calculated on a different base.
Corporate income tax and withholding apply on top of gaming duty, and dividend repatriation may attract further withholding.
Customer-side taxation changes behaviour. Where winnings are taxed in the customer's hands, or stakes carry a consumer-facing duty, the effective price to the customer rises and channelisation suffers.
Deductibility matters more than people expect. Whether bonuses, free bets and promotional credits are deductible from the tax base can move the effective rate by several points, and it is one of the details most often assumed rather than checked.
Model all of it as a single effective percentage of GGR. That is the number comparable across markets, and it is the number the business case turns on.
Modelling the unit economics
The arithmetic is not complicated and the discipline is in refusing to use the group averages.
Start with revenue per customer in that market, informed by comparable markets rather than by your home market. Deduct gaming duty and levies at the modelled effective rate. Deduct payment processing, which varies substantially by market because the local payment mix varies. Deduct platform and content fees, remembering that revenue share on a gross basis is materially more expensive in a high-tax market than in a low-tax one, and that whether the supplier's share is calculated before or after duty is a negotiable term worth real money.
Then deduct acquisition cost. This is the input most often imported from elsewhere and it is the one that varies most. A market with restricted advertising has a different cost of acquisition from an open one; a market with several entrenched incumbents has a different one again; and a market where every operator launches in the same quarter will see acquisition costs spike precisely when you need them not to.
Finally, deduct the local compliance and operations cost, which is a fixed cost and therefore decides the minimum viable scale. A market requiring a local entity, approved key persons, local customer support in the local language, local reporting and local audit carries a floor cost that a small customer base cannot absorb.
The output is a payback period and a minimum viable market share. If the model requires a share that no new entrant has ever achieved in that market, the model is telling you something.
Competition and timing
Incumbents. Who holds the market, how entrenched are they, and do they hold structural advantages such as retail estate, local brand recognition, exclusive sports rights or payment relationships? A market with a dominant domestic incumbent and strong brand loyalty is very different from a fragmented one.
Cohort effects. A newly regulated market where fifty operators launch in the same month produces an acquisition cost spike, followed by consolidation as the underfunded exit. Entering at the opening of a market means paying the highest acquisition costs in that market's history; entering later means facing established brands. Both are defensible and the choice should be deliberate.
First-mover advantage is real but narrower than claimed. It is genuine where brand recognition compounds, where retail presence is available, or where exclusive partnerships are being allocated. It is weak where the product is undifferentiated and customers hold multiple accounts.
Regulatory stability. A framework three months old will change. Newly regulated markets routinely revise tax rates, advertising rules and product restrictions within their first few years, usually in the restrictive direction. A business case that only works under the current rules is a business case with a short life, and the sensible test is whether it survives a materially worse tax rate and an advertising ban.
Writing the assessment so it survives
Two practices separate an assessment that holds up from one that is quietly abandoned.
Record the assumptions separately from the conclusions, with a source and a date against each. When the market moves, you want to know which assumption broke rather than re-running the whole exercise.
Write the disqualifying conditions down in advance. State the tax rate above which this does not work, the timeline beyond which it does not work, and the acquisition cost above which it does not work. Doing that before the commitment is made is the only reliable protection against a business case that is revised upward every time the market disappoints, which is the most common way operators end up in markets they should have left.