Is Canada going too far in overhauling competition law? Read our opinion to find out more.

Opinion: Canada risks going too far in overhauling competition law

“Competition Law in Canada: The Debate Over Structural Presumption”

In the realm of Canadian competition law, the winds of change are blowing. Amendments have been made, legislation has been passed, and the head of the Competition Bureau, Matthew Boswell, is pushing for even more significant modifications. The latest request by Mr. Boswell has sparked a debate that has not received enough attention in the media.

The Proposal for Structural Presumption

During his appearance before the House of Commons finance committee, Mr. Boswell put forth a bold proposal to include an explicit “structural presumption” in the Competition Act. This would shift the burden of proof in merger challenges, making post-merger market shares above 30 per cent presumptively anti-competitive. Instead of the bureau having to prove why a merger should not be allowed, the merging parties would now have to demonstrate why it should be permitted.

Challenges and Implications

While this proposal aligns with practices in the U.S. and has garnered support from certain political parties, it poses practical challenges in the Canadian context. The complexity of defining relevant markets, the varied nature of industries, and the potential chilling effect on mergers must all be considered. Moving forward with a structural presumption could hinder the growth of an efficient and modern economy.

The Importance of Evidence-Based Decision-Making

In a rapidly changing economic landscape, relying on presumptions rather than evidence-based analysis could have detrimental effects. The Competition Bureau must continue to engage in thorough case-by-case examinations to ensure the best outcomes for Canadians. It is crucial to maintain a balance between preventing anti-competitive behavior and fostering innovation and growth.


As the debate over structural presumption in Canadian competition law continues, it is essential to consider the long-term implications and potential consequences of such a shift. Striking the right balance between regulatory oversight and economic growth is paramount in ensuring a competitive and thriving marketplace. The path forward must be guided by evidence, analysis, and a comprehensive understanding of the intricacies of the Canadian economy.”



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