“In the telecommunications industry, a duopoly exists where only two major companies have complete control over the market, stifling competition.”

“A year later it began flights between Dublin and London, with the end of the duopoly, sparking a massive shakeup of the airline sector.”

“Well we don't believe it's in the public interest for there to emerge in Australia a duopoly in the liquor industry.”

“Basic industry knowledge indicates that duopolies do not lead to price competition, but that licensing of multiple operators does.”

“But even asking whether TV duopolies and newspaper-TV combos can produce better news may be beside the point.”

“Now, most markets are cozy duopolies, at best, where consumers can get broadband only from a phone or cable company.”