Years ago, I picked up Blue Ocean Strategy and found a distinction that fundamentally changed how I approach competitive analysis. The difference between alternatives and substitutes sounds academic, but once you see it, you can't unsee it — and it exposes blind spots in how most businesses think about competition.

I've used this framework repeatedly over the years: when advising on marketing strategy, when analysing new market opportunities, and when helping businesses understand why their "comprehensive" competitor research still missed the point.

The core distinction

Here's the difference:

  • Substitutes are products or services in different forms that have the same functionality
  • Alternatives are products or services with different functions that serve the same purpose

The key word is purpose. Substitutes do the same thing differently. Alternatives do different things that achieve the same underlying goal.

Like a lot of strategy, it comes down to language, and being precise about it pays off in the same way that getting clear on the difference between a customer and a client reshapes how you treat the people you serve.

Why this matters more than it seems

Most competitive analysis focuses almost entirely on substitutes. Marketing teams benchmark against direct competitors. Product managers track feature parity. Sales teams know their competitive landscape inside out — but only within their category.

This creates a dangerous illusion of completeness.

When you only study substitutes, you're asking "who else does what we do?" When you consider alternatives, you're asking "what else achieves what our customers actually want?" These are fundamentally different questions, and the second one usually reveals more strategic opportunity.

A practical example: the restaurant that forgot about Netflix

Consider a mid-range restaurant trying to grow revenue. The obvious competitive analysis examines other restaurants: similar price points, cuisine types, locations, Google ratings, menu innovations.

These are all substitutes — different forms of the same functionality (dining out).

But for many of the restaurant's target customers, the underlying purpose isn't "eat a meal outside the house." It's "have an enjoyable evening without cooking." Or "reconnect with friends." Or "mark a special occasion."

Alternatives that serve these same purposes include ordering takeaway and watching a film at home, hosting a dinner party, going to a comedy show, or attending a wine tasting. None of these are restaurants. All of them compete for the same evening.

This isn't theoretical. During lockdowns, restaurants discovered exactly how substitutable they were when customers realised that "enjoyable evening" could be achieved through meal kits, streaming services, and video calls. The restaurants that pivoted fastest weren't the ones watching competitor menus — they were the ones who understood they were competing for a purpose, not a category.

Beyond competitor analysis

This framework applies well beyond market research. I've found it particularly useful when businesses are stuck on a single approach to achieving their goals.

Say your business needs to increase profitability. The obvious routes — the ones that come up in every strategy session — are typically substitutes for each other: different types of marketing (paid search, content marketing, trade shows, direct sales), or different pricing strategies (discounts, bundling, premium tiers).

These all share the same functionality: generate more revenue or improve margins through sales and marketing activity.

But the purpose — improving profitability — has alternatives that look nothing like marketing. Reducing operational costs. Automating manual processes. Renegotiating supplier contracts. Exiting unprofitable customer segments. Improving employee retention to reduce hiring costs.

These alternatives often get siloed into different departments or discussions. Finance talks about costs. Marketing talks about revenue. Operations talks about efficiency. But they're all alternative paths to the same purpose, and the best strategic choice often sits outside your department's default frame.

How to apply this

When you're facing a strategic challenge, try this:

First, identify your purpose as clearly as possible. Not "we need better marketing" but "we need to acquire 500 new customers this quarter." Not "we need a new website" but "we need to reduce customer acquisition cost by 20%."

Second, list your substitutes — the obvious solutions within your current frame. These are valid options and shouldn't be dismissed.

Third, ask: "What completely different approaches could achieve the same purpose?" This is where alternatives live. They often feel like they belong to a different conversation, which is precisely why they get overlooked.

Fourth, evaluate both lists against your constraints and capabilities. Sometimes the substitute is genuinely best. But frequently, the alternatives offer better returns, lower competition, or a clearer path — precisely because everyone else is fixated on the substitutes.

The takeaway

Real strategic opportunities often hide in alternatives, not substitutes. The discipline of separating these two — of asking "what else achieves this purpose?" rather than "who else does this thing?" — is one of the most reliable ways I know to break out of conventional competitive thinking.

Your competitors are almost certainly studying their substitutes. Studying your alternatives is how you find the moves they're not making.