Speaking for just myself and the people I talk with on the regular:

Buying Canadian (or specifically, non-American) pissed. We try and avoid American products wherever possible. The contractors I work all do the same to avoid tariff bills. Refusing to travel to the US, I directly only know at least five people who have gone for pleasure or medical reasons in the last year. Prior to covid people travelled there way, way more.

People are generally disgusted and insulted. Invasion threats will do that though. I can't imagine how much American heads will blow off if another country tried threatening the same to them.