No definition of entrepreneur that I've been able to find says that the business needs to be sustainable or provide value to customers. So I would answer that

No definition of entrepreneur that I've been able to find says that the business needs to be sustainable or provide value to customers. So I would answer that the definition has never changed from A to B, because it's never been A. The definitions I've looked at do tend to say the entrepreneur takes on financial risk. He may not have done that.