Family owned businesses make up a large percentage of businesses in India, with approximately 90% being family owned or controlled. Succession planning is important for continued success but only 15% of Indian family businesses have a robust plan. The major business houses discussed are Tata, Reliance, Birla, and Ambani. They have grown significantly over generations through expansion, acquisitions, and diversification. Maintaining family harmony and establishing clear succession plans and governance structures are keys to ensuring long term survival of family businesses.