The entertainment industry (much of which is informally known as show business or show biz) consists of a large number of sub-industries devoted to entertainment. However, the term is often used in the mass media to describe the mass media companies that control the distribution and manufacture of mass media entertainment. In the popular parlance, the term show biz in particular connotes the commercially popular performing arts, especially musical theatre, vaudeville, comedy, film, and music.
Modern free radical thinkers of the 20th century predict a massive reform in the entertainment industry with the emergence of a new social conscience. This theory is labeled as the Death of Hollywood.