Joint sector industries are owned jointly by the government and private individuals, combining the merits of public and private sectors. Ownership is distributed between various public and private stakeholders, with no single party holding more than 25% without government approval. Joint sector industries aim to provide social control over industries while taking advantage of both public and private investment to promote industrial growth and development. However, they also face issues like potential corruption, lack of quality control, and limitations of both public and private sectors.