The Last Time Ads Took This Much of the Economy, It Was 1999

The Take: Advertising is taking its biggest bite of the economy since the dot-com bubble, and it is doing it while the economy slows. That is a top, not a triumph. The businesses that come through a top in one piece are the ones that can prove their spend works, not the ones paying peak prices on faith.

By one measure, close to it. WPP Media puts advertising's share of global GDP at its highest since 1999, the year before the dot-com crash. The Australian market is growing faster than the economy.

Here is the reporting. The Australian market will reach A$31.1 billion in 2026, up 7.4% on WPP Media's mid-year forecast. That is more than a point ahead of the 6.0% nominal GDP growth the same report cites. Advertising is growing faster than the economy paying for it.

Globally the signal is louder. WPP put advertising's share of GDP at its highest level since 1999, past the dot-com peak. The last time the industry took this much of the world's output, a lot of the spending turned out to be buying attention that never converted into anything.

A rising ad market is not proof that advertising is working harder. It is proof that attention costs more. When budgets grow faster than the economy funding them, the price of reaching the same customer goes up. The businesses that cannot measure their return are the ones who overpay without knowing it.

Here is what is moving in Australia this year.

Search keeps climbing. Television keeps falling. The money is not disappearing, it is moving to channels that promise a number at the end. The catch is that most businesses cannot check the number they are handed.

Across the businesses we score at New Rebellion, proving what marketing actually returns is one of the weakest things we see, not one of the strongest. So the market is asking businesses to pay more, for attention, in channels sold on measurement, at a time when most of them cannot measure. That is the whole risk in one sentence.

Because you pay into the same auction. When large advertisers pour money into Google, Meta and the rest, they bid up the cost of the exact clicks a plumber in Geelong or a clinic in Parramatta is trying to buy. A global boom lands on your local invoice.

There is a concentration problem underneath it too. WPP has Alphabet, Meta and Amazon taking 57.6% of advertising revenue outside China, with the 25 largest sellers controlling three quarters of the total. Most of your budget flows to a handful of companies that set the price and keep the score. You are a price taker in a market that keeps getting dearer.

WPP made that call against a slowing backdrop, noting the cash rate at 4.35% and inflation not forecast back to target until mid-2027. A booming ad market on top of a cooling economy is exactly the split that should make an operator cautious, not excited.

At a top, the cheapest edge is being able to prove your spend works while your competitors are still guessing.

I am not telling you to cut your marketing. Pulling budget at the wrong moment is how businesses lose years of ground. I am telling you to spend at a top like someone who expects to be asked what they got for it.

First, know your return before you add a dollar. If you cannot say what your current spend brings back, adding to it is not growth, it is exposure.

Second, treat rising costs as a measurement test. When the price of a click goes up, the businesses that can prove which clicks convert keep buying with confidence. The rest freeze or overpay.

Third, protect the channels you own. Email, your site and your existing customers do not get repriced by an auction every morning. In a market where bought attention keeps getting dearer, owned attention is the hedge.

Fourth, be ready to walk. The one advantage a small budget has is that it can move fast. If a channel cannot show you a return, stop feeding it and put the money where you can see the result.

New Rebellion scores Australian businesses across six marketing dimensions. Two of them cover measurement. They look at what a business tracks and how well it turns attention into sales. Both sit among the weakest we see in most businesses. The read is directional, a signal of where the proof is thin rather than a laboratory result. The full methodology sits here if you want the mechanics.

This looks like a top to me, and tops reward discipline, not enthusiasm. That is my read, not a forecast. Advertising taking its biggest share of the economy since 1999 is not a reason to pile in. It is a reason to make every dollar prove itself before it leaves the building. If you want to see where your own measurement is thin before the next auction gets dearer, that is what Hub is built to show you.

Is the advertising market really at dot-com bubble levels?

On WPP Media's mid-year forecast, advertising's share of global GDP is at its highest since 1999, the year before the dot-com crash. That is a share measure, not a prediction of a crash, but it is a signal that spending is running hot relative to the economy.

Why are advertising costs rising if the economy is slowing?

Because demand for attention is growing faster than the economy. Australia's ad market is forecast to grow 7.4% in 2026 against nominal GDP growth near 6%. More money chasing the same clicks pushes the price up regardless of how the wider economy feels.

Should I cut my marketing budget at a top?

Not blindly. Cutting spend that you can prove works hands ground to competitors. The right move is to know your return first, then trim what you cannot measure rather than what you can.

What does owned marketing have to do with an ad bubble?

Channels you own, like email and your website and your existing customers, are not repriced by an ad auction every day. When bought attention gets more expensive, owned attention becomes your cheapest and steadiest source of demand.