if you're concerned about productivity and competitiveness, i can't imagine a worse policy than giant corporate tax hikes on capital inputs that are intentionally targeted at the exact same canadian sectors that have been hit with an import tax in their largest market. if the tariffs are a shot to the head, the counter-tariffs are a nail in the coffin.
this might be good politics, but it's catastrophically bad economic policy. it's very head-scratching. it's so bad, as policy, that it's enough to make you wonder if it's theatre. if trump were to write canadian policy that is intended to intensify the effects of his own tariffs with the intent to shut these sectors down in canada for good, this is the policy he would write.
thankfully, the effects are very limited and a lot of these very popular but economically stupid counter-measures will have little practical effect in reality.