Irish and EU legislation prohibit the abuse of a dominant position in trade. Dominance is defined as economic strength enabling a firm to behave independently of competitors, customers, and consumers. The purpose is strictly economic and does not protect other interests. Sector-specific regulators like ComReg can designate firms as having significant market power in electronic communications. Cooperation agreements coordinate enforcement between the Competition and Consumer Protection Commission and sector regulators. The dominance rules apply to all undertakings engaged in economic activity for gain, with no entities exempt.