Refers to a market condition dominated by two producers.
En el mercado actual, el duopolio entre las dos grandes empresas limita la competencia y afecta a los consumidores.
In today's market, the duopoly between the two large companies limits competition and affects consumers.
El duopolio entre las dos empresas ha limitado la competencia en el mercado local.
The duopoly between the two companies has limited competition in the local market.