Sure it sounds good, and it has a ring of righteousness.
But that's a misconception. Yes, we can chose a worthy purpose, but no one said you have to. The real reason to clearly articulate the ultimate purpose of a business is to make it “self-driving”.
As your business grows, there will be many moments (actually his will be the norm!) when you will be absent. You will have to delegate, and there will be moments when events will not adjust to any process. Once this happens, you will have to rely on your staff to make decisions, and trust them.
Direct supervision by “the boss” allows for getting everything according to her desires, but it doesn't scale at all. Defining rigid processes scales better, but it doesn't help with those cases that are not covered. The one method that offers the most consistent results at scale, is a combination of defined processes, but with empowered staff members who share the same values and are after a common purpose.
Good reading!