A different electrical system would mean that all safety laws about electricity wouldn’t apply, there are probably work-arounds for that, but you’d lose the benefit of harmonized rules for hundreds of millions of people.

And while actual Canadians would like Europe’s privacy laws, the Canadian oligarchs (the Weston family, the Irvings, etc.) probably wouldn’t. Same with parental leave, vacation time, etc. And governments don’t have a good track record of listening to Canadian citizens instead of the oligarchs / business interests.

Personally, I’d love for Canada to become more European, but I know there would be a lot of resistance.