The Canadian government could even set up their own Mastodon server and disallow public sign-up, ensuring that fakes could be easily spotted.

There already are replacements. Replacements not owned by fascists.

What we need is a nationalized grocer.

A company not driven by profits that the corporations have to compete with, because they obviously don’t compete with each other.

Where can I read more about this?

Just FYI: Captain Canuck is separate from the Marvel character, Guardian/Vindicator, who is the leader of Alpha Flight. They look similar and are both Canadian, but they aren’t the same.