Founders stall here more than almost anywhere else in the entrepreneurship process. No customers yet, so no customer discovery, so no evidence, so no pitch. That chain of logic feels reasonable and it breaks at the first link. You do not need a paying customer to start customer discovery. You need a stranger who has the problem you think you are solving.
A customer for discovery purposes is not someone who has bought from you. It is someone who currently lives with the problem, today, whether or not they have ever heard of you or paid anyone to fix it. That is a much larger pool than the zero people currently on your invoice, and every one of them is available to you on day one.
I coach founders through customer discovery and non-dilutive funding, and the founders who wait for revenue before they start interviewing are almost always the same founders who build first and discover the problem was wrong second. Below is how I get them started at zero revenue.
Start with the problem, not your idea
Before you have anything to sell, discovery is entirely about the problem. This is the same discipline Steve Blank built into the customer development method: find people who currently experience the problem, and ask how they deal with it today, what they have tried, what it costs them, and who else has to agree before they would change how they handle it. None of those questions require a product, a company name, or a dollar of revenue. They only require you to find the right stranger and ask well.
The questions that work with zero credibility
Strangers will talk to you about a real problem long before they will buy anything from you, and the questions that earn that conversation are the same ones I teach in every I-Corps style program I run: walk me through the last time this came up, what did you try, and why did that not stick. None of those require you to explain who you are or what you are building.
Where to find people who have never heard of you
Zero customers does not mean zero access. LinkedIn search by job title and industry works for B2B problems. Niche online communities work for consumer problems people already complain about in public. Referrals from your first five interviews work for almost everything, so ask every person you talk to who else deals with this, and the list rarely runs dry. Trade associations, meetup groups, and alumni networks are underused and usually generous with introductions when you ask specifically instead of broadly.
Do not let zero customers become an excuse to skip discovery
The founders who skip discovery because they have no customers yet are usually the same founders who build first and discover the problem does not exist second. Zero customers is exactly the moment discovery matters most, because it is the cheapest moment to be wrong. A rejected assumption before you write a line of code costs you an afternoon. The same rejected assumption after eighteen months of building costs you the company.
What validated looks like with no revenue attached
At this stage, validation does not mean a signed contract. It means a consistent pattern: the same problem, described independently by many strangers, in similar language, with a real cost attached that they can quantify. That pattern is evidence, even without a dollar changing hands, and it is what earns you the next conversation, whether that conversation is with an investor, a first design partner, or a mission owner who controls a budget.
I have coached founders pursuing SBIR and STTR non-dilutive funding who built their entire Phase I case on exactly this kind of pattern, gathered months before they had a single dollar of revenue or a finished product. Agencies fund evidence of a real problem. They do not require you to have sold anything first.
Turning discovery into your first real customer
The interviews that go well often turn into your actual first customer relationship, if you ask directly. Once someone has described a real, costly problem in detail, it is fair to ask whether they would be a design partner, a pilot user, or the first person to pay once you have something to sell. That single question converts a discovery conversation into a pipeline, without requiring you to have built anything first. Once you have that pattern in hand, the next problem is usually turning it into a pitch that survives a real conversation, and knowing how many conversations you actually need before you trust what you are hearing.
Frequently asked questions
Can I do customer discovery before I have a product?
Yes, and you should. Discovery works on the problem, not the product, so a founder with no product and no name yet can still run a full round of interviews. Waiting for a product before you start talking to people backwards the entire method.
Who counts as a customer if nobody has paid me yet?
Anyone who currently lives with the problem you think you are solving, whether or not they have ever heard of you. Revenue is a later signal, not a qualifying condition for who is worth interviewing today.
How do I find people to interview if I have zero customers?
LinkedIn search by job title and industry for B2B problems, niche online communities for consumer problems people already complain about, and referrals from your first five conversations for almost everything else. Ask every person you interview who else deals with this, and the list rarely runs dry.
Should I offer to pay people for interviews?
Rarely necessary for a real problem. People who genuinely deal with a costly problem are usually glad to talk about it, and a small incentive can attract people who just want the reward rather than people who have the problem. Save paid recruiting for research pools you cannot reach any other way.
Does customer discovery work for non-profit or mission-driven ventures?
Yes, with beneficiaries and mission owners standing in for customers and revenue. The method is the same: find the people who live with the problem, ask about their current behavior, and let the pattern across many conversations tell you whether the idea holds up.
Zero customers is a starting condition, not a disqualifying one. The strangers who have your problem today are already out there, and finding five of them this week costs you nothing but the asking.