First, Canada should just join Eurovision. This should be mandatory IMO, for all european members, candidates and future prospects.

But realzies, Canada is just too far away. They can get a trade deal and join in for certain policies(environmental, etc) but ultimately, unions mostly make sense for neighbours. I dont think either the EU or Canada will benefit that much from a union, at least for now. Maybe in a few decades, after both sides integrate better and have common policies, things will be different. However, if globalization collapses and the US keeps going the way it is going, i can see this accelerating things.

Having a popular, standardized pc with fixed hardware and OS would enable game developers to aim that as minimum(or recommended) requirement and to optimize their games for that. And since it will be running linux, this means that gaming in linux would become even more mainstream and better supported too.