A business without a business plan is still a business. A codebase without users is probably not a business, sure. But if you have users there is almost alway

A business without a business plan is still a business. A codebase without users is probably not a business, sure. But if you have users there is almost always a way to monetize that. Thus, a business. The plan doesn't have to be any more complex than, "Charge for something."