Chanakya of Modern Business Governance & Time Management

Why do two sons of a father with equal means reach different levels at different times? Is it purely a matter of luck of their own or are there some other factors that affect it adversely? Personal attributes of an entrepreneur have been considered for the first time in Chanakya of Modern Business Governance and Time Management with a sixth sense. That's why I usually say that a copy of a model or thought is always easier than creating something new be it life or writing.