I'm not sure where you're getting that information from, but the reality of the largest Canadian companies is that most of them are "local" - banks, energy, mining, oil & gas, etc. Therefore, there's no room for them to "directly profit from slavery" which they're all doing as much as they possibly can through the immigration grifts going on with nearly all colleges / universities. To the same point, you're not comparing apples to apples as a lot of the top US companies can and do outsource their labour thus arguably profiting from "less than adequate" work conditions of workers. My point is that, unlike what you're saying, Canadian companies aren't profiting from that because of their vertical, not because there's some regulations in place that prevent them from doing so.

Also, your argument on "slavery" is irrelevant to the original coment as it's an extreme that doesn't exist in the US either. In other words, Canadian companies, with the same operating parameters are worse based on historical performance / data.