Currently, some of the most notable oligopolies in the U.S. are in film and television production, recorded music, wireless carriers, and airlines.

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Somer G. Anderson is CPA, doctor of ...

Businesses don't operate in a bubble -- their sales and profitability are affected by the business environment in which they operate. Many factors affect this environment, from regulation and ...