Sean Ellis has said that a startup has achieved product/market fit when >40% of its visitors would be 'very disappointed' if the product were no longer availabl

Sean Ellis has said that a startup has achieved product/market fit when >40% of its visitors would be 'very disappointed' if the product were no longer available. http://startup-marketing.com/the-startup-pyramid/ http://startup-marketing.com/the-startup-pyramid/