> I am taking zero VC, and that will allow me to make money on as few as three clients.
A VC would give you legitimacy to help you get the customers you need. What large customers are going to back you with their business unless they know there's some deep pockets behind you? There are few things more valuable than a business's source code, it encapsulates all of their business processes and is how all of the business's data is accessed.
Why would a company want to entrust you with this? How are you protecting against data loss, and the legal liability that comes with this responsibility (insurance, legal)?