Threat of Substitutes, Explained for Founders
The threat of substitutes is one of Michael Porter's five competitive forces: the risk that customers meet the same underlying need with a different kind of product or approach instead of buying from your category. A spreadsheet, a manual process, or simply doing nothing all count as substitutes.
Quick Answer: Substitutes are different products or approaches that solve the same job as yours — spreadsheets, email, an intern, or the status quo. The threat is high when a substitute offers better value for the price and is easy to switch to, and it quietly caps how much you can charge.
Most founders map their competition wrong. They build a grid of rival startups doing roughly the same thing, then relax when the grid looks thin. But the pressure that most often caps a young company's growth is not a rival at all — it is the substitute: the cheaper, clumsier, already-in-hand way your customer solves the problem today. It is one of the pressures in Porter's Five Forces, and the one founders reliably underweight.
This guide defines the threat of substitutes, shows how it differs from direct competition, and explains why a humble spreadsheet can threaten your pricing more than a funded rival.
Substitutes vs. direct competitors: what's the difference?
A direct competitor sells the same kind of product to the same customer; a substitute meets the same need with a different kind of product or approach. Your rival's app and your app are direct competitors. A spreadsheet, a notebook, or an agency doing the work by hand are substitutes — they get the job done without being in your category at all.
Michael Porter drew this line on purpose. In Competitive Strategy, he defined substitutes as products from other industries that perform the same function for the buyer. The threat is structural: substitutes come from outside the boundary you normally watch, which is exactly why they are easy to miss.
The two behave differently. Direct competitors are visible — you can list them, track their pricing, copy their features. Substitutes don't look like you, so founders who benchmark only against look-alike rivals get blindsided by the alternative customers were quietly using all along.
Here is how the two compare across the dimensions that matter when you size up the field.
| Dimension | Direct competitor | Substitute |
|---|---|---|
| What it is | The same solution in your category | A different product or approach for the same need |
| Example (for a project tool) | A rival project-management app | A spreadsheet, a whiteboard, an email thread |
| Where it comes from | Inside your industry | Outside your industry or category |
| The customer's question | "Which tool is better?" | "Do I even need a tool for this?" |
| Why founders miss it | Rarely — it's easy to track | Often — it doesn't look like a competitor |
Takeaway: Direct competitors fight you for a customer who has already decided to buy something like yours. Substitutes fight over whether the customer buys anything in your category at all — a deeper and more dangerous contest.
How to find the substitutes your customers actually use
To find your real substitutes, stop listing companies and start asking how customers solve the problem today, before your product exists. The answer is rarely "a competing app." It is usually a workaround: a spreadsheet, a recurring meeting, a trusted freelancer, or a habit nobody questions.
A few reliable ways to surface them:
- Ask the "before" question in interviews. "Walk me through how you handled this last month" reveals the real incumbent — usually a process, not a product.
- Follow the time and the budget. Wherever a standing block of someone's week or an existing budget line already goes is where your substitute lives.
- Watch the tools that touch everything. Email, chat, and spreadsheets substitute for a huge range of specialized products because they are already open on the screen.
- Name the status quo out loud. "Keep doing it the current way" is always on the customer's list of options, even when it's on nobody's competitive grid.
These are what founders often call indirect competitors, and the jobs-to-be-done lens sharpens the point: customers "hire" something to make progress on a job, and they will hire a spreadsheet or a manual routine just as readily as software if it does the job well enough.
Once you have the list, treat those substitutes as first-class entries in your analysis, not a footnote — the complete competitor analysis playbook shows how to map them. Tools like Edmired can keep that map organized, but the discipline matters more than the tool: record what the customer does today, not what you wish they would buy.
Why spreadsheets and "doing nothing" count as substitutes
A spreadsheet counts as a substitute because it does the customer's job through a different means; "doing nothing" counts because the need can also be met by simply tolerating the problem. Both satisfy the same job your product targets — one clumsily, one by lowering the bar — and both are usually free and already in hand.
The spreadsheet is the universal substitute. It is flexible, familiar, and already paid for, so the customer's real question is rarely "your product or a competitor's?" It is "your product or the spreadsheet I already know?" Beating a rival on features does nothing to win that comparison.
"Doing nothing" is the substitute founders forget. Porter framed substitutes as alternative products, but for a startup the most common alternative is no purchase at all — the customer decides the problem isn't painful enough to act on. Jobs-to-be-done thinking calls this non-consumption, and it is often the largest "competitor" in a new market.
These substitutes are dangerous precisely because they are unglamorous. They never appear on a pitch deck's competition slide, they have no marketing to monitor, and they cost the customer nothing new to keep using. Inertia is free; your product is not, and that gap is the real hurdle a new category has to clear.
How substitutes cap the price you can charge
Substitutes place a ceiling on your pricing. Porter's central insight about this force is that when your category's price climbs too far above the substitute's price-performance, customers defect — so the alternative sets an invisible upper limit on what you can charge before demand leaks away.
The threat peaks on two conditions. First, when the substitute is a better deal for the money — good-enough performance at a far lower cost, or improving quickly. Second, when switching to it is easy — little cost, effort, or risk to move. A substitute that is both cheap and frictionless is the most punishing, because customers can leave the moment your price feels unjustified.
Watch the substitutes that are getting better. Porter singled out one type as especially worth attention: those whose price-performance is improving over time. A workaround that gets a little better each year — a refined spreadsheet template, an AI tool quietly absorbing the task — erodes your pricing power even if it looks harmless today.
The practical way to feel this ceiling is to map each substitute against the pricing pressure it creates.
| Substitute type | Example | How it caps your pricing |
|---|---|---|
| Manual workaround | A spreadsheet or shared doc | You must be worth more than "free and familiar" before anyone pays |
| General-purpose tool | Email, chat, a whiteboard | Your price competes with something the customer already owns |
| Human labor | An intern, VA, or agency | You're priced against what they'd pay a person to do it |
| Non-consumption | Living with the problem | Your price competes with zero — the cost of doing nothing |
Takeaway: Your price is never set in a vacuum. Every substitute is a reference point in the customer's head, and the cheapest credible one — often the status quo — quietly defines the most you can charge.
Key Takeaways
- The threat of substitutes is one of Porter's five forces. It measures how easily customers can meet the same need with a different kind of product or approach, and it shapes an industry's long-run profitability.
- Substitutes are not direct competitors. A direct competitor is the same solution in your category; a substitute is a different approach — a spreadsheet, an agency, a manual process — that serves the same underlying job.
- The status quo is the substitute founders miss. "Doing nothing," or living with the problem, is a real alternative and often the biggest competitor a new product faces.
- Substitutes cap your pricing. The cheapest credible alternative sets an invisible ceiling: charge too far above its price-performance and customers defect to it.
- The threat is highest with better price-performance and low switching costs. A substitute that is both a better deal and easy to adopt is the most dangerous kind.
- Find substitutes by asking how customers cope today. The honest "before" story — not a list of rival startups — reveals the alternatives you actually have to beat.
Frequently Asked Questions
Is "doing nothing" really a substitute for my product?
Yes. If a customer can meet their need by tolerating the problem, then not buying is a genuine alternative to your product — it satisfies the same job by lowering the bar. Porter focused on substitute products, but for startups this "non-consumption" option is often the biggest competitor, because it costs the customer nothing new and demands no change in behavior.
What is the difference between a substitute and an indirect competitor?
They overlap heavily. Porter's "substitute" is a product from another industry that meets the same need; founders usually call that same thing an "indirect competitor." Both describe an alternative that isn't a look-alike rival — a spreadsheet, an agency, or a manual process. The label matters less than the habit of counting these alternatives as real competition, because your customers already do.
How can a startup reduce the threat of substitutes?
Widen the gap between your product and the substitute's price-performance, and lower the cost of switching to you. Be clearly better at the specific job — not marginally better on features — and make adoption easy: fast setup, simple migration, low risk. You can't eliminate substitutes, but you can make choosing them feel like the worse deal.