Dominant market position

Market dominance and monopolies

As economic competition is encouraged, regulation in most countries applies to both monopolistic firms, as well as firms who hold dominant market positions. In Australia, for example, the Australian Competition & Consumer Commission hold the position that a firm with significant market power (relating to dominant firms, all the way up to firms in a complete monopoly) must not "do anything that has the purpose, effect or likely effect of substantially lessening competition."