a ‘single founder problem’ vs founders mismatch? who takes the risk: you or the VC?
about 15 years ago YC set up (adopted?) a new fashion: there must be a founding team, not just one person willing to build a business (don’t look at Jeff Bezos - he didn’t know!)
the reasons behind that thinking:
- a solo founder is a big risk - no pushbacks, no daily accountability, no backup
- a good founding team brings complementary skills - usually it’s a CEO + CTO pair
- speed and velocity - at least x2 in growth, and often the multiplier is much higher
all sounds good and reasonable and two-founder-startups became a gold standard for years to come. even now, when you apply to YC, they’ll strongly recommend looking for a co-founder if you are applying solo. sweet. so, what’s the problem?
well, the reality check is. as much as you’d be encouraged to get a co-founder, one of the first questions you’re about to be asked when raising money, is “for how long have you known each other? have you built something together before?” feels pretty much like a couple in an immigration office: are you reaaaaaally a legit couple, or are you here for money visa only?
the explanation is quite simple: most startups fail either because of money (didn’t raise enough / in time / didn’t meet the financial projections), or the co-founders rivalry (I’ll go through the reasons in a minute).
it’s not enough to just “find a co-founder”, you want a proven one. ironically btw, that’s the reason why YC’s co-founders matching platform ≠ problem solved. so grab your popcorn and let’s go through all the things that might possibly go wrong, meaning you should talk them through with your (future) co-founder before starting a journey / right now if you’re already in.
1. roles, functions and hierarchy split.
everyone knows about it, everyone speaks about it, and yet here’s what happens if you never worked together before:
case 1. one founder scales into their role, the other doesn't = competence gap widens post-series A. an equal equity split doesn’t automatically create fairness. 50/50 feels fair on day one, but it rarely feels fair on day 500. when roles evolve, effort shifts, or one founder becomes the public face, 50/50 starts feeling misaligned. you do have to address it early.
case 2. hiring a "mini-me" instead of someone with complementary skills. in the last two weeks only I’ve seen pairs of two CTOs (“I’m good at product”), two marketers (“GTM is the bottleneck”) and two sales people (“we’ll vibecode the product”). this is the hard way. don’t take the hard way.
case 3. one founder building a team culture the other didn't sign up for. think 996 culture vs a “hey, I’ve got two kids, you know” case. the trap: it seems to be so obvious, but I see founders getting trapped all the time.
case 4. the ‘visionary vs operator’ split only works when both respect the other role. think Steve Jobs + Steve Wozniak pairing. if one founder thinks they’re the brain and the other is ‘just execution,’ this unspoken hierarchy is already broken.
case 5. different personal financial runways creating different urgency levels: 1 founder is all in, full-time, the other founder is working a job and building on the side and/or in no hurry to make money. bad juju.
2. unclear decision rights.
meaning, who decides, how the decisions are being made, what’s the threshold.
case 6. we’ll talk it through and make a decision. consensus is a classic trap for an early-stage founding team → it ends up with a 10-hour working day and a feeling that nothing’s been done. consensus sounds mature on paper, but for startups, it often means an operational nightmare. (don’t worry, the fix is coming, give me a minute).
case 7. “left hand doesn’t know what the right hand does”. 100% independent decision-making that introduces a “wait a sec, where exactly are we moving”. the fastest check - if any of your early employees signals that they are getting a different set of instructions from one founder to another, that’s an urgent problem to address.
and now the fix for both cases. instead of function-based decision making, try to introduce the IMPACT layer to it. impact = time + $$$$ + robust growth. examples: minor product / UI decisions, tools to use - one-man decision. hiring and new markets strategy - both co-founders are involved.
3. different risk tolerance and/or expectations.
most founders' splits happen over effort, risk tolerance, or time horizon - not product or marketing decisions. get a proper founder agreement before you start - I’ve never seen a founder regretting doing that.
case 8. silent disagreement on ambition because it didn’t seem to be the most important thing to talk about at the very beginning. one wants to bootstrap longer, another one wants to raise and swing big. one wants a $50M acquisition, one wants to IPO. there's no room for a compromise and every big decision becomes a big fight. agree on the strategy early on.
case 9. no formal co-founder agreement, so there's no clean mechanism to exit. because you have great relations and care for each other. I’m trying really hard not to attach a 27-min voice note on this use case here, so I’ll simply say this: no one owes you shit. protect what you’re building, get things on paper and sleep well. non-negotiables: % of equity, every co-founder vesting period, and cliff.
case 10. one founder quietly starts a side project or takes another role. sadly, that’s more common than you might have thought. the product goes in another direction, the fundraise doesn’t move as fast as they’d like, can’t find the PMF - hundreds of reasons. that’s when those vesting period and cliff terms become your parachute.
a helpful algorithm.
long story short: you’re the only one to decide how to build your company. co-founder packages come with their pros and cons, but it’s always a big risk if you start a company with someone you don’t know. feels more like a hasty LA marriage, than a good plan.
no co-founder is better than a mismatching co-founder - those co-founder "divorces" are quite an expensive story and they come with dead equity to them.
on the other hand, building is lonely, so here’s the quickest test ever: when thinking about starting a company, is there a person that comes to your mind immediately and sounds like a dream option?
if so, go ask them now. if no, watch out for any rushed decisions.