Keyera-Plains challenge tests Canada's new structural merger presumption
By Flavia Fortes ( May 14, 2026, 19:58 GMT | Comment) -- Canada’s challenge to Keyera’s acquisition of Plains All American’s Canadian NGL business may become the first major test of how far the country’s revamped merger law shifts antitrust analysis from behavioral evidence toward structural inference. The new structural presumption for Canada’s merger enforcement came after amendments to the Competition Act lowered the bureau’s burden in concentrated markets, moving it closer to US and EU structural approaches and reducing the bureau’s historical dependence on elaborate econometric proof of future price effects. Canada’s challenge to Keyera’s acquisition of Plains All American’s Canadian NGL business may become the first major test of how far the country’s revamped merger law shifts antitrust analysis from behavioral evidence toward structural inference....
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