Media industries operate similarly to large businesses by manufacturing products, creating demand, and seeking profits. However, media production has additional complexities like unpredictable costs and demand, and short product shelf lives. Large media companies dominate the market and pursue global strategies to exploit new areas. Ownership and control of media is an important issue due to the ability of owners to influence cultural messages and ideology in media products for business and ideological reasons. Modern media companies are increasingly large and global conglomerates.