Porter's Five Forces: How to Measure a Company's Economic Moat on Bursa Malaysia

Many new investors think fundamental analysis is only about numbers: rising profits, low PE, generous dividends. But today's numbers do not guarantee the numbers five years from now. The more important question is: can this company defend its profits from competitors? This is exactly where the concept of an economic moat and the Porter's Five Forces framework become essential tools for long-term investors on Bursa Malaysia.

This article explains what a moat is, how Michael Porter framed the five competitive forces that shape an industry, and how you can use this framework to evaluate the competitive strength of listed companies - complete with real stock examples such as Bursa Malaysia, Tenaga Nasional, Nestlé and Public Bank.

What Is an 'Economic Moat'?

The term economic moat was popularised by Warren Buffett. Picture a medieval fortress surrounded by a wide water moat - the wider the moat, the harder it is for enemies to attack. In business, that "moat" is the competitive advantage that protects a company's profits from being eroded by rivals.

Buffett once said he wanted companies protected by a "wide and durable moat". The reason is simple: when a company earns large profits, competitors will rush in to grab a slice of the same pie. Without a moat, competition erodes profit margins until returns fall to the industry average. With a strong moat, a company can sustain high margins and a consistent return on equity for years.

This is why a moat matters to investors. Wide-moat companies typically show consistently high and stable ROE and ROIC over 5-10 years, not just a single stellar year. A moat is also what justifies your future cash flow assumptions when you run an intrinsic value (DCF) calculation - without a moat, your long-term growth assumptions are just wishful thinking.

What Is Porter's Five Forces?

If a moat is "what" we are looking for, then Porter's Five Forces is "how" we measure it. The framework was introduced by Harvard Business School professor Michael E. Porter in his classic Harvard Business Review article in 1979 and updated in 2008. According to Porter's original Harvard Business Review article, these five forces determine the level of competition and the long-term profitability of an industry.

The core idea: an industry's profitability is not determined by whether it is "high-tech" or "boring", but by the structure of five competitive forces. A glamorous-looking industry can be unprofitable if all five forces press hard, while an ordinary industry can be a gold mine if its forces are weak. The five forces are:

• Rivalry among existing competitors (Competitive Rivalry)
• Threat of new entrants
• Bargaining power of suppliers
• Bargaining power of buyers
• Threat of substitute products or services

How does this relate to a moat? Simple: a company with a wide moat is one that successfully controls all five of these forces. The weaker the pressure these five forces exert on a company, the wider its moat. Porter's Five Forces is a diagnostic checklist to test whether the "moat" you think you see actually exists or is merely an illusion.

Force 1: Rivalry Among Existing Competitors

This is the most obvious force - how fiercely do companies in the same industry fight over customers? When rivalry is intense (many players, near-identical products, price wars), profit margins erode. When rivalry is weak (few players, differentiated products), margins are preserved.

Bursa Malaysia example: The low-cost airline and retail industries are examples of high rivalry - price wars constantly squeeze margins. In contrast, Bursa Malaysia Berhad (1818) is the only stock exchange operator licensed in Malaysia. With no direct competitor, internal rivalry is almost zero. That is why its moat is extremely wide.

Signs of low rivalry: few players, the company has pricing power, and a distinctive brand that is hard to copy.

Force 2: Threat of New Entrants

If anyone could enter the industry and compete with the company tomorrow, high profits will not last. High barriers to entry - such as large capital requirements, government licences, or an established brand - protect incumbent companies.

Bursa Malaysia example: Tenaga Nasional Berhad (5347) owns nearly 100% of the electricity grid in Peninsular Malaysia. It is practically impossible, both in cost and law, for another company to build a transmission grid to rival TNB. This is a government-regulated natural monopoly - barriers to entry as high as the sky. However, remember that TNB cannot raise tariffs freely because it is governed by the Incentive Based Regulation (IBR) framework, an example of how a moat can come with conditions.

The banking industry also has high barriers to entry - you need a licence from Bank Negara Malaysia, large capital, and public trust that takes decades to build.

Force 3: Bargaining Power of Suppliers

If a company depends on just a handful of suppliers, those suppliers can raise input prices and squeeze margins. Conversely, if the company has many supplier options or is large enough to dictate terms, supplier power is weak - good for the company.

Bursa Malaysia example: Giant retailers such as supermarket chains have strong bargaining power over suppliers because they buy in large volumes. By contrast, a manufacturer that relies on a single source of imported raw material (for example a certain commodity) is exposed to cost spikes when global prices rise. When you read a company's income statement, watch whether the cost of goods sold (COGS) is rising faster than revenue - that is a sign supplier power is pressing.

Force 4: Bargaining Power of Buyers

When customers have many choices and can switch easily, they can push prices down. When customers are "locked in" (high switching costs) or the brand is too strong to refuse, buyer power is weak - the company can maintain premium pricing.

Bursa Malaysia example: Nestlé (Malaysia) Berhad (4707) has a portfolio of brands such as Milo, Maggi and Nescafé that are deeply embedded in Malaysian life. Even with cheaper products on the shelf, many consumers still choose Nestlé brands. This brand loyalty weakens buyer bargaining power and allows Nestlé to maintain premium pricing - a classic intangible asset moat.

In the banking sector, Public Bank (1295) enjoys high switching costs - once a customer opens a salary account, home loan and credit card with one bank, the cost and hassle of switching banks is very high. These "sticky" customers contribute to low-cost deposits and consistently low non-performing loan (NPL) ratios.

Force 5: Threat of Substitute Products or Services

This force is often overlooked. It is not only direct competitors that are dangerous, but also other products that can meet the same need in a different way. New technology often arrives as a substitute that kills off old industries.

Bursa Malaysia example: The print media (newspaper) industry was badly hit when online news and social media became free substitutes. Likewise, traditional telecommunications companies had to adapt when calling apps such as WhatsApp replaced ordinary calls and SMS. Investors must constantly ask: is there a new technology or business model that could make this company's product obsolete within 5-10 years?

Five Types of Moat You Can Identify

After understanding the five forces, the next step is to identify the type of moat protecting a company. Researchers at Morgan Stanley, in their well-known report "Measuring the Moat", and research firms such as Morningstar categorise moats into five main types:

• Intangible assets: brands, patents, licences. Example: the Nestlé brand, pharmaceutical intellectual property.
• Switching costs: hard or expensive for customers to switch. Example: a Public Bank account, enterprise software systems.
• Network effects: value increases as more users join. Example: payment platforms, online marketplaces.
• Cost advantage: able to produce at lower cost than competitors. Example: large-scale producers with economies of scale.
• Efficient scale: the market is only big enough for a handful of players. Example: Bursa Malaysia as the sole exchange operator, TNB in power transmission.

Notice how each of these moat types actually weakens one or more of Porter's five forces. That is the beauty of this framework - it connects the theory of industry structure with the reality of a company's competitive advantage.

How to Use Porter's Five Forces to Analyse Bursa Stocks

Here are practical steps to apply this framework before you buy a stock:

1. Identify the company's actual industry. Don't make it too broad or too narrow. Is it a regional bank, a food retailer, or an infrastructure operator?
2. Rate each of the five forces as high, medium or low. Write a short reason for each.
3. Determine the type of moat (if any) that protects the company - intangible assets, switching costs, network effects, cost advantage, or efficient scale.
4. Confirm with the numbers. A real moat will show up in the financial data: stable gross margins, consistently high ROE/ROIC, and strong operating cash flow. Check the cash flow statement to ensure profits actually turn into cash, not just accounting figures.
5. Test for durability. Will this moat last 10 years, or is there a substitute technology that could destroy it?

Combine this qualitative analysis with quantitative analysis. A wide moat gives you confidence to hold a stock for the long term, while ratios such as the PE ratio and the health of the balance sheet tell you whether the price on offer is worth it.

Common Mistakes & Limitations of the Framework

Porter's Five Forces is not a magic crystal ball. A few things to remember:

• It is a snapshot in time. Industry structure changes. A moat that is wide today can narrow when technology or regulation shifts - as the print media industry experienced.
• It does not directly account for government and regulation. In Malaysia, government policy, subsidies and licences play a large role (see TNB). Some practitioners add a "sixth force" of government/regulatory influence.
• A wide moat does not mean the stock is cheap. A great company at too high a price can still be a poor investment. Competitive strength and valuation are two separate things.
• Don't be overconfident. This analysis involves subjective judgement. Always look for evidence that contradicts your thesis, not just evidence that supports it.

Frequently Asked Questions (FAQ)

What is the difference between Porter's Five Forces and a moat?

A moat is the end result - the competitive advantage that protects a company's profits. Porter's Five Forces is the diagnostic framework used to measure whether that moat exists by evaluating the five competitive forces in the industry. In short, Five Forces is the tool, the moat is the answer.

Is Porter's Five Forces suitable for retail investors in Malaysia?

Yes. Although it was created for corporate strategy, retail investors can use it as a qualitative checklist before buying a stock. It helps you think beyond the numbers and judge whether a company's profits can endure.

How do I know if a Bursa company has a moat?

Look for signs in the financial data: stable or rising profit margins, consistently high ROE/ROIC over 5-10 years, and pricing power. Then confirm by identifying the type of moat (brand, switching cost, network effect, cost advantage, efficient scale).

What are examples of wide-moat companies on Bursa Malaysia?

Among them are Bursa Malaysia Berhad (sole exchange operator - efficient scale), Tenaga Nasional (regulated grid monopoly - efficient scale), Nestlé Malaysia (strong brands - intangible assets), and Public Bank (high switching costs). But remember, strong competitive advantage does not mean the stock is cheap at its current price.

Can a moat disappear?

Yes. A moat can narrow or disappear due to substitute technology, regulatory change, or mismanagement. That is why investors must periodically re-examine their moat thesis rather than assuming it lasts forever.

What is the "sixth force" people often mention?

Some practitioners add government and regulatory influence as a sixth force, especially in markets like Malaysia where licences, subsidies and government policy heavily influence the profitability of industries such as utilities, banking and telecommunications.

Should I use Five Forces for every stock?

For long-term (buy and hold) investing, yes - because you depend on the durability of a company's profits. For short-term trading based on price momentum, this framework is less relevant because it evaluates structural competitive strength, not daily price movements.

Conclusion

Porter's Five Forces transforms how you evaluate stocks from a simple "is it profitable or not" into a deeper question: "can this company stay profitable?" When combined with Buffett's moat concept, you gain a powerful qualitative framework to identify companies that are genuinely protected from competition - the kind of companies that build wealth consistently over the long term.

Once you have identified wide-moat companies on Bursa Malaysia, the next step is to actually own a piece of them.

To start investing in the shares of wide-moat companies, you need a CDS account - an account that allows you to invest on Bursa Malaysia as well as foreign stock markets such as the United States and Hong Kong. Open your CDS account here to get started.

If you are just starting out and want a solid foundation, download our free stock market basics ebook as a starter guide.

Further Reading

• ROE vs ROA vs ROIC: The 3 KPIs Expert Investors Actually Track
• DCF Valuation for Bursa Investors: How to Calculate Intrinsic Value Like Buffett
• How to Read an Income Statement: Revenue, Net Profit & a Company's Cash Reality
• Cash Flow Statement: How to Track a Company's Real Performance on Bursa Malaysia
• PE Ratio: How to Tell if a Stock Is Cheap or Expensive by Sector in Malaysia