Survivorship bias. What we don't see is the total proportion of failed startups. If 95% of solo-founded startups fail outright before raising any venture capit

Survivorship bias. What we don't see is the total proportion of failed startups. If 95% of solo-founded startups fail outright before raising any venture capital, but only 80% of co-founded startups do, these numbers don't really mean anything -- you're better off finding a co-founder in terms of raw career success and entrepreneurial potential. The only relevant information here is that once startups have gone through some sort of basic fundraising filter, solo-founded startups are more common than not. I would hazard a guess that there are a lot more solo-founded startups at the top of the funnel than in stage two. Let's see attrition rates at each stage (Founded, Angel, Seed, Series A, Series B, [...], Exit). (That said: I generally agree with the statement that you don't need a co-founder. If you have the ability to execute, build and let a co-founder "find you" if necessary.)