duopolies

/D Y UW0 AA1 P AH0 L IY0 Z/
noun
  1. 1

    A market situation in which two companies exclusively provide a particular product or service.

  2. 2

    (by extension) The domination of a field of endeavor by two people or entities.

  3. 3

    (by extension) Situation in which two or more TV or radio-stations in the same city or community share common ownership.

Source: https://en.wiktionary.org/wiki/duopolies, https://en.wiktionary.org/wiki/duopoly