B2B or B2C for solo founders: choose by how you like to work

The choice between B2B and B2C is usually framed as a market question: which is bigger, which pays more. For a solo founder, it is first a question about your week. B2B means a small number of customers won through conversations; B2C means a large number won through content and communities. Paul Graham puts the constant plainly in Do Things That Don't Scale: "The most common unscalable thing founders have to do at the start is to recruit users manually." Whichever model you pick, you are the one doing that recruiting, so pick the version you can stand to do every week.

The arithmetic shows how different the two weeks look. To reach 5,000 euros in monthly revenue at 250 euros a month per customer, you need 20 customers. At 8 euros a month, you need 625. Graham's growth benchmark in Startup = Growth is that "A good growth rate during YC is 5-7% a week," and in the same logic he notes that "If you have 100 users, you need to get 10 more next week to grow 10% a week." Ten more business customers a week is a lot of sales calls; ten more consumers a week is a modest content habit.

What does each model ask you to do every week?

	B2B	B2C
Customers needed for 5,000 euros a month (illustrative prices)	About 20 at 250 euros	About 625 at 8 euros
Core weekly work	Outreach, discovery calls, demos, follow-ups	Posting, community replies, onboarding tweaks
Where the first users come from	Your network, direct messages, referrals	Communities, social platforms, search
What slows you down	Long buying cycles, several decision makers	Low attention, churn, platform algorithms
What validation looks like	A buyer pays or signs a pilot	Strangers sign up and come back without a nudge

Neither column is easier. They are different kinds of hard, and the question is which kind you will keep doing in month four when nothing is working yet.

Which questions tell you whether B2B or B2C fits you?

Answer these four honestly. Two or more answers on one side is your lean.

1. Would you rather have ten conversations with people who could each pay you a lot, or publish something a thousand strangers might see? If a week of calls sounds draining and a week of writing sounds fine, you lean B2C. If posting in public feels worse than a cold message, you lean B2B.
2. Can you live with long gaps between effort and money? A business buyer might take weeks to say yes, then need a manager's sign-off. If that silence would make you quit, B2C's faster, smaller feedback loop suits you better.
3. Do you want to go deep with a few customers, or tune a system that serves many? B2B rewards learning one customer's workflow in detail. B2C rewards improving sign-up, onboarding and retention numbers across hundreds of people you will never speak to.
4. Do you already know people in an industry with a problem you could solve? A former operations manager who knows twenty other operations managers has a B2B head start nobody can buy. No network in any industry points toward B2C, or B2B aimed at groups you can reach in public, like freelancers.

The fourth question often settles it. Access to buyers beats a better idea you cannot get in front of anyone.

How should a B2B solo founder find the first customers?

Start with people you already know in the target role. Message past colleagues and contacts, ask about the problem rather than pitching, and look for one who feels it badly enough to work with you. Graham describes the extreme version for B2B startups: "pick a single user and act as if they were consultants building something just for that one user." The first customer becomes the mould; if you fit them well, others like them usually follow.

He is also direct about the part many technical founders hope to skip: "You have to do sales yourself initially." For a solo founder, that is not a phase to delegate. It is the job until there is revenue to hire someone. The ideal customer profile is the tool that keeps this outreach focused on the right people.

How should a B2C solo founder find the first users?

Go narrow and go where the people already are. Graham's example is Facebook, which at first "was just for Harvard students," a market small enough that the people in it felt the product was built for them. For a solo consumer product that means one community, one platform and one kind of person: indie game makers, new parents in one city, runners training for their first marathon.

Then publish on a schedule you can keep. A B2C launch is rarely one big post; it is weeks of useful answers, short demos and replies in the places your users already talk. A content acquisition loop is how that effort starts compounding instead of resetting every week.

When should market size override personal fit?

When the market on the side you prefer cannot pay enough to sustain you. If your B2C idea only works at 2 euros a month and the realistic audience is a few thousand people, the math fails no matter how much you enjoy making content. The same applies to a B2B niche with only a few dozen possible buyers.

The strongest objection to choosing by preference is that preferences change: plenty of founders who dreaded sales calls learned to run them well. That is true, and it argues for picking the work you are willing to learn rather than only the work you already enjoy. It does not argue for ignoring the question, because a solo founder has no co-founder to take the part they avoid.

What should you do after choosing?

Pick one first channel and give it four weeks before judging it: warm outreach for B2B, one community or platform for B2C. Then validate with money or real repeat use, not compliments; how to validate a startup idea covers what counts. Once someone pays, scope the smallest product that keeps them, as in building an MVP as a solo founder.

Where can you plan a first launch and distribution?

From Idea to Launch with AI is a 1 week Builders Camp bootcamp with 2 live sessions, taught by Andre Albuquerque and part of the Vibe Coding Expert Track and the Discovery Expert Track. Its published topics include defining your ICP and value proposition, MVP scoping, launch narrative and positioning, and distribution options for first users (communities, partnerships, outbound, content and loops), plus traction metrics. Its practical challenge has you diagnose a launch where 847 people visited a landing page, 31 signed up for the waitlist, and nobody showed up.

See the From Idea to Launch with AI bootcamp