The most common post YC failure case for the companies we fund, is they're incredibly focussed during YC on their company... and after they start doing a lot of other things. They advise companies, they go to conferences, whatever.
Sam AltmanAs the company grows and about this 25 or so employee size, your main job shifts from building a great product to building a great company.
Sam AltmanWhy couldn't it have been done 2 years ago, and why will 2 years in the future be too late?
Sam Altman