In their earliest days, startups tend to depend much more on their relationships with investors than with customers. In fact, for some startups, there may be a period of many months where they have, essentially, not relationship with customers because they have nothing for the customers to use (because they are still building it - with the money the investors invested).

That is exactly why this post is about a CRM for a startup that can be easily grown out of as the relationship management needs change.