That sounds like a very low-margin business, if literally anyone can create and maintain it with close to zero human input. Its like the sci-fi equivalent of generating books with AI and selling them on Amazon. The cost of goods produced by your hypothetical business would plummet, and the real value would simply shift somewhere else that is still able to benefit from human labor or ingenuity.
If you're talking about a world where AI has become so advanced that humans have literally nothing to contribute to society, in any field, then that's called a post-scarcity society, where the very concept of a "business owner" (not to mention the concepts of "business" and "owner") starts to lose all meaning.