What Buffett and Graham can teach investors about economic moats

Rather than simply searching for cheap companies, Warren Buffett sought out businesses that competitors struggled to disrupt. He often described these as economic castles protected by moats: advantages that could preserve profits even if other industries, technologies and market leaders changed.

That idea still shapes the way many investors think about quality businesses today. The companies that endure are the ones which have become deeply embedded in the way consumers spend, work and behave.

What is an economic moat?

An economic moat is a sustainable competitive advantage that helps a company defend its profits and market position over the long run. Some moats are obvious while others are harder to spot.

Two Australian examples are REA Group and Transurban. REA’s position in online property listings has become so entrenched that it is difficult to imagine a genuine challenger emerging any time soon. And in the case of Transurban, once critical toll-road infrastructure is built, replicating it becomes enormously expensive and politically difficult.

How businesses build economic moats

The source of a moat can vary widely. Sometimes it is a brand. Apple’s ecosystem is a good example: customers who own an iPhone often end up using the company’s watches, laptops, payments systems and subscription services too. The longer you are in the ecosystem, the more inconvenient it becomes to leave it.

Other businesses benefit from scale or network effects that strengthen as they grow. Visa’s payments network has become so embedded within the global financial system that competing against it at scale would require enormous investment, merchant acceptance and consumer adoption all at once.

In some industries, sheer size is an advantage. Larger retailers, manufacturers and logistics businesses often distribute products more efficiently, negotiate better supplier terms and operate at a lower cost than smaller rivals.

Other businesses build their moat on consumer behaviour. Once there are processes around a software platform or an operating system, switching elsewhere can become disruptive enough that many simply stay put. That can create remarkably sticky revenues, even in highly competitive industries.

Is moat investing and quality investing the same thing?

Economic moats and quality investing are closely related, but they are not the same.

Many quality companies possess economic moats because sustainable competitive advantages often help produce those financial characteristics. Not every quality company has a wide moat, however, and not every company with a moat will always appear attractive from a valuation or portfolio perspective.

This is one reason Buffett’s approach evolved beyond Graham’s traditional deep value framework. Rather than simply buying statistically cheap companies, Buffett increasingly sought high‑quality businesses capable of compounding value for long periods.

Why economic moats matter for investors

For decades, investors have sought businesses capable of defending profits and compounding earnings over long periods. But even companies with strong economic moats can become poor investments if investors pay too much for them, which is why many moat-focused investment strategies consider valuation alongside business quality.

This philosophy underpins the VanEck Morningstar Wide Moat ETF (ASX: MOAT), which provides exposure to US companies that Morningstar’s equity research team believes possess sustainable competitive advantages, or “wide economic moats”.

No moat lasts forever

The biggest challenge with moat investing is that competitive advantages rarely remain intact forever. Businesses that once dominated entire industries have faded as technology evolved, consumer behaviour changed or management teams failed to adapt. Many companies that once appeared unassailable eventually lost the position that made them successful in the first place.

This is why finding a strong business is not enough on its own. Paying too much for even an exceptional company can still lead to disappointing investment outcomes. That is why many moat-focused investors place as much emphasis on valuation as they do on business quality - assessing whether a company’s share price remains reasonable relative to its earnings, cash flows and long-term growth prospects.

Strategies such as the VanEck Morningstar Wide Moat ETF (ASX: MOAT) are built around this idea, providing exposure to companies Morningstar believes possess sustainable competitive advantages.

Key risks

An investment in our wide moat ETF carries risks associated with: ASX trading time differences, financial markets generally, individual company management, industry sectors, foreign currency, country or sector concentration, political, regulatory and tax risks, fund operations and tracking an index. See the VanEck Morningstar Wide Moat ETF PDS and TMD for more details. 

MOAT is likely to be appropriate for a consumer who is seeking capital growth, is intending to use the product as a core, minor or satellite allocation within a portfolio, has an investment timeframe of at least 5 years, and has a high risk/return profile.