You work your heart off on an excellent idea, you come up with a cool software, that you believe, will be loved by its users, you put it on your website for people to subscribe and... pause! Nobody shows up, and you are stuck. Notice any software on an unsuccessful SaaS startup that is just 'stuck' on its respective website, and you will see the problem... no subscribers or visitors on the site. Nobody would want that to happen to their business. Would you?