You'll never see Canada block big tech at this point I'm afraid. All the talk of sovereignty is just that, talk. None of our different government agencies is prepared to abandon Microsoft. All of our financial regulators are completely in bed with Microsoft. Most of our banks are in bed with Microsoft. Our ATMs run on Windows due to Payments Canada being in bed with Microsoft and mandating it. All of your banking data is accessible by Microsoft. Every government agency runs on Microsoft.
Every time there's an announcement about ditching US providers, ask your MP/MLA if that includes Microsoft / big tech. There's always an "out" in those announcements to allow them to dodge that one -- like "It's too expensive to change", or "too difficult to change quickly" or whatever.
I mean, look at all these "nation-building" projects that they're itching to suppress Canadian's rights to "get moving" -- they're all projects that're gonna be lead by Big US companies to extract resources from Canada. They put on a good show, but the reality is that Trump / America was right that Canada is basically a little bitch at this point. Our politicians have proven that time and again this year.