monopolistic

monopoly +‎ -istic

monopolistic (comparative more monopolistic, superlative most monopolistic)

1. Acting in the manner of a monopoly.

   The antitrust laws try to prevent monopolistic behavior.

   • 2006, Edwin Black, chapter 1, in Internal Combustion‎:

     But electric vehicles and the batteries that made them run became ensnared in corporate scandals, fraud, and monopolistic corruption that shook the confidence of the nation and inspired automotive upstarts.

• oligopolistic