If you have grown up in a family with few means at its disposal, you will still eat the last corner slice of bread or vigorously shake the bottle of ketchup to extract the last drop even if you can easily afford another one. If you are a family-driven company, you cannot suddenly become a professionally-managed company, as Kumaramangalam Birla discovered when, as a young man, he took over the companies his charismatic father Aditya Birla had managed.