Some businesses seem almost impossible to knock off their position. Customers keep coming back, competitors struggle to copy what they do, and the company continues making attractive profits even when an industry becomes crowded.

That usually is not an accident.

Behind many successful businesses is some form of competitive advantage – a reason customers choose one company over another or a reason that company can operate more efficiently than its rivals.

The advantage might come from lower costs, a trusted brand, unique technology, better distribution, network effects, customer switching costs or a combination of several factors.

The strongest companies often do not rely on just one trick. Their advantage comes from a system of activities that reinforce each other.

Michael Porter famously distinguished strategy from simply being operationally efficient. Competitors can often copy individual best practices, while a distinctive combination of activities is harder to imitate.

So how do businesses actually create an edge – and how do they stop competitors from taking it away?

What Is Competitive Advantage?

Competitive advantage is something that allows a business to create more value or capture more value than competitors.

That can happen in several ways.

A company might manufacture products more cheaply and still deliver acceptable quality.

Another company might charge premium prices because customers believe its products are noticeably better. A third may own technology, data or distribution channels that rivals cannot easily reproduce.

Recent McKinsey research describes competitive advantage as more than simply having general business strengths.

It involves assets, capabilities or operating models that help a company deliver superior customer value, achieve lower costs or earn stronger returns than peers.

The important word is relative.

Being good at customer service is not necessarily an advantage if every major competitor provides equally good service.

An advantage exists when you are meaningfully better in an area customers value or when you can produce similar value at a more attractive economic cost.

Build an Advantage Through Lower Costs

One of the oldest business strategies is straightforward: operate at a lower cost than competitors.

Companies can build a cost advantage through scale, automation, efficient supply chains, better purchasing terms, simplified products or highly productive operations.

Imagine two manufacturers selling a similar product for £100.

Company A spends £80 producing and delivering each unit, leaving £20 before other expenses. Company B has developed a more efficient production system and spends only £60.

Company B suddenly has several strategic options.

It could keep the £100 price and earn a larger margin. Alternatively, it could lower its price to £85, remain profitable and make life uncomfortable for competitors.

This does not mean “cheap” is always a good strategy. Aggressive cost cutting that damages product quality or customer experience can eventually destroy value.

A strong cost position comes from designing the business differently, not simply squeezing every expense.

Porter’s strategy framework emphasises that competitive positioning becomes harder to imitate when multiple activities fit together and reinforce the same strategy.

Win Through Differentiation

The opposite route is to give customers something they believe is worth paying more for.

Differentiation might come from design, reliability, customer service, convenience, technology, product quality or brand reputation.

Consider two coffee shops located on the same street.

One competes mainly on low prices and fast service. The other charges more but offers specialty beans, highly trained baristas, an attractive environment and a distinctive customer experience.

Both can succeed because they are solving diffrent customer needs.

The mistake happens when a company attempts to charge premium prices without providing a meaningful reason to pay them.

True differentiation must matter to the customer.

Adding ten product features that nobody wants is not an advantage. Reducing a customer’s waiting time from two days to ten minutes potentially is.

A succesful differentiation strategy therefore starts with understanding what customers value and what they are genuinely willing to pay for.

Create Switching Costs That Encourage Loyalty

Winning a customer once is helpful. Making the customer reluctant to leave can be even more powerful.

Switching costs are the financial, practical or psychological costs involved in moving from one provider to another.

Think about business software.

A company may have years of data stored inside one platform, hundreds of employees trained to use it and several internal systems connected through integrations. Changing providers could mean migrating data, retraining staff and rebuilding workflows.

Even if a competitor offers slightly lower prices, switching may simply feel like too much trouble.

This creates a more defencible customer relationship.

Switching costs can also appear through loyalty programmes, personalised settings, accumulated user data, familiar workflows or ecosystems containing multiple connected products.

However, companies need to be careful. Artificially trapping customers through confusing contracts or deliberately difficult cancellation processes may create frustration rather than genuine loyalty.

A healthier advantage comes from making continued use genuinely valuable.

Use Network Effects to Become More Valuable as You Grow

Some businesses become more useful when more people use them.

This is known as a network effect.

Harvard Business School Online explains that network effects occur when the value of a product, service or platform depends partly on the number of users, buyers or sellers participating in it.

Marketplaces are a classic example.

More sellers attract more buyers because there are more products available. More buyers then attract additional sellers because the marketplace offers greater sales opportunities.

The cycle can reinforce itself.

Similar effects appear in payment networks, social platforms, communication tools and some software ecosystems.

Strong network effects can create significant barriers for newcomers. A new marketplace might have excellent technology, but customers will not care much if there are few sellers. Sellers will also hesitate to join if there are few customers.

Network effects are not automatically permanent, though. Users can move when another platform offers significantly better value, especially when using multiple competing platforms is easy.

Build Assets Competitors Cannot Easily Copy

Sometimes the strongest edge comes from owning or developing resources that are genuinely difficult to reproduce.

These might include patents, proprietary technology, exclusive licences, scarce locations, unique datasets, highly specialised expertise or long-established supplier relationships.

Brand can also become an important asset.

A trusted brand reduces uncertainty for customers. People may choose a familiar company because they believe it will deliver consistent quality, even when cheaper alternatives exist.

But simply having a famous name is not enough.

Brands need to be supported continously by product quality, customer experience and consistent positioning. A company can spend decades building trust and lose much of it quickly if its behaviour repeatedly disappoints customers.

McKinsey’s work on business strategy argues that profitable growth is more sustainable when companies scale a distinctive business model rather than simply expanding because a market happens to be growing.

Why Operational Excellence Alone Is Not Enough

Every business should try to become more efficient.

The problem is that competitors can usually improve too.

If one supermarket installs better inventory software, others can eventually purchase similar technology. If one manufacturer copies a new production technique, rival factories can study and adopt it.

This is why operational excellence and strategy are not identical.

Porter argues that operational effectiveness involves performing similar activities better, whereas strategic positioning depends on performing different activities or combining activities in a distinctive way.

Imagine a competitor trying to copy a low-cost airline.

Buying similar aircraft is easy.

Copying its entire system – route structure, turnaround procedures, staffing practices, airport choices, pricing model and operating culture – is far harder.

Individual practices are often copyable. An interconnected business model may not be.

Understand the Competitive Forces Around Your Business

Businesses do not compete only against companies selling almost identical products.

Porter’s Five Forces framework broadens the picture by looking at rivalry among existing businesses, the threat of new entrants, substitutes, supplier bargaining power and customer bargaining power.

Consider a restaurant.

Its competition is not limited to the restaurant next door. Customers could cook at home, order takeaway or buy prepared food from a supermarket.

Suppliers can also affect profitability if ingredient prices increase. New restaurants can enter the market, while customers can easily compare prices online.

Understanding these forces helps businesses determine where profits are vulnerable.

A strong advantage should ideally make at least some of these pressures easier to handle. Brand loyalty may reduce customer sensitivity to price, for example, while scale could improve bargaining power with suppliers.

Protect the Advantage by Making It Hard to Imitate

Creating an edge is only half the job.

The second challenge is keeping it.

Competitors are constantly watching successful companies. If an idea produces attractive profits and appears easy to copy, somebody will probably copy it.

Businesses therefore need what strategists sometimes describe as barriers to imitation.

These barriers may include patents, scale economies, network effects, switching costs, complex operating processes or accumulated expertise.

Strategic fit matters too.

A competitor may easily copy one feature of your service but struggle to replicate an entire collection of systems that have been developed together over many years.

Harvard strategy material on sustaining competitive advantage highlights mechanisms such as switching costs, network effects and learning as potential sources of longer-lasting performance.

Protection does not mean becoming defensive, however.

Companies must continue improving because almost every advantage weakens eventually.

Competitive Advantages Can Disappear

No business has a permanent right to superior performance.

Technology changes. Customer preferences shift. New competitors arrive. Regulations evolve, and business models that once looked unbeatable can become outdated surprisingly quickly.

Recent McKinsey research found that many organisations do not actively validate or manage their sources of competitive advantage, even though higher-performing companies tend to understand their advantage at a more detailed level.

That means managers should repeatedly ask whether their original advantage still matters.

Do customers still value it?

Can competitors now copy it cheaply?

Has a substitute made the product less relevant?

Are new technologies changing the economics of the industry?

A company should protect valuable capabilities while still being willing to replace old advantages with new ones.

Sustainable strategy is not about building a moat and then doing nothing. It is about strengthening, adapting and occasionally rebuilding that moat as the market changes.

Competitive advantage is the reason a business can consistently create more value, operate more efficiently or earn stronger returns than its competitors.

That advantage might come from low costs, differentiation, brand strength, switching costs, proprietary resources, network effects or an interconnected operating model that competitors struggle to reproduce.

Building the advantage is only the beginning. Companies also need to understand competitive threats, keep innovating and regularly test whether their original strengths still matter to customers.

The strongest businesses rarely rely on one isolated feature. They develop systems of capabilities that reinforce one another and become increasingly difficult to imitate.

Take a close look at your own business or a company you know. Ask one simple question: Why would a customer choose this company instead of the best available alternative? The answer is a good place to start looking for its real competitive advantage.