> Most companies, particularly most start-ups, suck at sales. "Great engineers, shit sales" is a more common failure mode in Silicon Valley than "sold something couldn't be built." Also, "good at sales" isn't a one dimensional metric. There are different sales processes, some of which some people (and consequently companies) are better at than others.

Bad, derivative products hocked by hopelessly deluded people playing startup accounts for most failures. Over promise and under deliver kills even more.

Few truly good products fail because even a bad sales team can sell a good company to a bigger company that can capitalize on the deal.