Warner Bros started as a small production company in the 1920s and became vertically integrated within a decade by acquiring distribution and production facilities through key purchases. They released one of the first talking movies, The Jazz Singer, in 1926 and specialized in genres like gangster films during hard times to stay profitable. Under the studio system, major studios tightly controlled production, distribution, and exhibition of films, though this began to break down in the 1950s with new technologies and suburbanization.