REA Group and Seek: How Australian Publishers Built World-Class Marketplaces

Australia produced two world-class classified marketplaces because its newspaper publishers were unusually quick to build digital competitors to their own print businesses. That decision — deliberately cannibalising a profitable print classifieds section to establish a digital one — is the single best strategic call made by any Australian media company, and it is the reason the value survived the transition even as the journalism that once depended on it did not.

How did Australian publishers get digital classifieds right?

By building them early and running them separately. Australian newspaper groups launched dedicated property, employment and automotive websites in the late 1990s, at a point when print classifieds were still enormously profitable and the digital business threatened to cannibalise them. Most publishers globally protected the print revenue and lost both.

Running them as separate businesses mattered as much as building them. A classifieds website inside a newspaper competes for resources with the newsroom, is managed by executives whose careers were built in print, and is measured against print metrics. Structural separation gave the digital businesses their own management, capital and identity.

The eventual outcome was that the marketplaces outgrew their parents. REA Group has at times been worth more than the newspaper businesses that own the majority of it, and Domain was Nine’s largest growth asset until it was sold to CoStar in 2025. The tail became far more valuable than the dog.

Why is the number one position worth so much more than number two?

Because two-sided markets tip. A buyer searching for a property goes to the site with the most listings; an agent listing a property advertises where the most buyers are looking. Each reinforces the other, so a modest early lead compounds into overwhelming dominance and the second-placed platform struggles to close it regardless of product quality.

The financial consequence is that the leader captures a disproportionate share of the economics. It can charge more per listing, extract higher-value premium placement products, and expand into adjacent services — mortgage broking, valuation data, agent software — using an audience the challenger cannot match.

This is why the Domain sale to CoStar is interesting rather than routine. CoStar is a well-capitalised US property data specialist buying the number two platform in a market with an entrenched leader, which is either an expensive mistake or a genuine attempt to fund a challenge that Nine was unwilling to bankroll. The outcome will be one of the more informative competitive experiments in Australian digital markets.

How does Seek differ from REA?

Its market is more cyclical and more internationally contested. Employment advertising tracks hiring, which is the most volatile component of business spending — employers stop advertising roles immediately when conditions weaken and resume slowly. Property listing volumes move too, but housing turnover is less abrupt than hiring.

Seek also expanded internationally in a way REA largely did not, taking positions in employment platforms across Asia and Latin America. That strategy offered growth beyond a small domestic market and introduced execution risk, competition from global players such as LinkedIn and Indeed, and the complexity of managing minority stakes in businesses with different market dynamics.

The structural threat is different too. Property listings have no obvious substitute; job seekers increasingly arrive through professional networks, direct company career sites and recruiter outreach as well as job boards. A property marketplace defends a transaction that must be advertised publicly; an employment marketplace defends a transaction that can happen entirely privately.

What should other businesses take from this?

First, that if a digital version of your business is possible, someone will build it, and it is better if that someone is you. The Australian publishers that built their own classifieds sites lost print revenue and kept the value. Those that defended print lost both, and the sequence took less than fifteen years.

Second, that structural separation is what allows a new business to grow inside an old one. A digital venture managed by the incumbent business unit, measured on the incumbent’s metrics and funded from the incumbent’s budget, will be strangled by entirely reasonable decisions. Separate management, separate reporting and separate capital are the minimum conditions.

Third, that dominance in a two-sided market is worth pursuing at almost any short-term cost, because the returns are non-linear. Being twice as large as the second platform is worth far more than twice as much. That is why marketplace businesses spend heavily and unprofitably for years to establish a lead, and why investors tolerate it — the outcome, when it works, is a business like REA.

How do marketplaces expand beyond listings?

By moving toward the transaction. A property platform that knows a buyer is searching in a suburb, at a price point, on a particular timeline holds information worth far more than a listing fee, and the natural extensions are mortgage broking, valuation data, agent software and settlement services.

The strategic appeal is that these adjacencies are worth more per customer than the core listing product and are defensible for the same reason the core is defensible: the audience already arrives. Each additional service also increases switching costs for the agents and lenders who integrate with the platform.

The risk is channel conflict and regulatory attention. A platform that lists properties and also brokers the mortgage has an obvious interest in the transaction it is supposedly presenting neutrally, and financial services adjacencies bring licensing obligations, conduct regulation and conflict management requirements that a pure advertising business never faced. Growth in these areas is real, and it converts a simple business into a regulated one.

What would actually threaten a dominant marketplace?

Three things, in ascending order of seriousness. The first is a well-funded challenger buying its way to scale, which is essentially what CoStar’s acquisition of Domain represents. History suggests this rarely works against an entrenched leader, but a patient owner with deep pockets and a long horizon is the most credible version of the attempt.

The second is supplier revolt. Real estate agents and employers are the paying customers, and if listing costs rise far enough, industry bodies have both the incentive and the collective scale to fund an alternative. Cooperative platforms have generally failed because participants defect once the platform threatens their individual interests, but sustained price increases keep the option alive.

The third and most serious is a change in how buyers search. A marketplace’s power comes from being the default destination, and that assumption breaks if search behaviour moves to a layer above it — a general search engine, an assistant, or an aggregator that queries multiple platforms. Any business whose moat is being the place people go should watch closely for changes in how people decide where to go.

One final observation for anyone building or investing in a marketplace. The Australian examples all took roughly a decade of sustained investment before the network effects became self-reinforcing, and during most of that period the print businesses funding them were far more profitable. Marketplaces look inevitable in retrospect and are extremely difficult to hold conviction on at the time, because the metrics that matter — listing share relative to the nearest competitor, and the direction it is moving — are not the metrics a conventional financial review will focus on. Boards that measured these businesses on near-term profitability would have shut them down years before they worked.

How cyclical are these businesses really?

More than their margins suggest and less than the underlying markets. Property listing volumes fall when vendors decide not to sell, which happens when prices are falling or interest rates rising, and employment advertising falls when hiring stops. Both are genuinely cyclical inputs.

The offset is pricing. A dominant marketplace can raise prices per listing and sell more premium placement products even when volumes decline, which smooths revenue considerably. REA’s record revenue driven by Australian residential performance reflects both healthy listing volumes and successful yield growth, and in weaker volume periods yield does much of the work.

The limit is that yield growth cannot offset a severe volume decline indefinitely, and pushing price into a downturn is exactly when customer resistance is strongest. For anyone modelling these businesses, the sensible approach is to model listing volumes and yield separately, and to test what happens when a volume decline coincides with pricing pushback — because those conditions arrive together.

The broader Australian lesson is about market size. A country of roughly 27 million people cannot usually support two subscale competitors in a network business, which is why Australian marketplaces, supermarkets, banks and airlines all converge on the same structure: one dominant player, one credible challenger, and very little room for a third. Investors who understand that pattern price the leader accordingly and treat challenger positions with appropriate caution, because in a market this size the gap between first and second rarely closes on its own.

Frequently Asked Questions