Adjective
oligopolistic (comparative more oligopolistic, superlative most oligopolistic)
Having the character of, or dominated by, an oligopoly
There has been a gradual tendency for "fixed" (and exorbitant) fees being reduced for all investors, partly from falling administration costs but also assisted by large institutions challenging brokers' oligopolistic approach to setting standardised fees. Source: Internet
The motivation behind this kink is the idea that in an oligopolistic or monopolistically competitive market, firms will not raise their prices because even a small price increase will lose many customers. Source: Internet
The term refers to an environment where the state intervenes in the economy to protect large monopolistic or oligopolistic businesses from competition by smaller firms. Source: Internet