Big companies can bring value through innovation, employment, and investment, but they also pose risks such as unilateral price increases, quality reduction, and innovation restrictions. Corporate power can lead to exploitation, pollution, and influence on public debates, emphasizing the need for proper regulation.

Independent market authorities like ACM play a crucial role in ensuring well-functioning markets by preventing, countering, or regulating corporate power in the public interest. They aim to make markets work well for all stakeholders by addressing issues like mergers, cartels, and monopolies.

Lessons learned include the importance of prevention over regulation, the need for a whole-of-government approach, and the necessity of having a variety of intervention tools to address evolving market circumstances. Market authorities must continuously evaluate and adapt their tools to restore competition.