It's not about Canada having one (or N) successful companies at any point in time, it's that Canada has a long history of innovation followed by assets going missing. The reason for mentioning Blackberry, Nortel and Instant Pot is "remember NOT TO MAKE THOSE MISTAKES AGAIN".
AI mentioned upthread should be relevant to kids. Besides the foundational early work at U of Toronto, there is at least one Canadian AI startup ($3B+ valuation) with global investors and enterprise customers. They have US offices but HQ remains in Canada. Tenstorrent ($1B valuation) silicon startup recruited chip legend Jim Keller (designer of Ryzen & more). Canadian ATI (GPUs) remains part of AMD.
There's a fantastic woodworking tools vendor that's been around for 40 years, earning kudos for both products and company culture, Lee Valley Tools, which sells to both Canada and US customers.
The multi-millennia history of engineering includes the history of military innovation. If Canada is going to be compared to anyone, Finland is a more natural comparison than the southern neighbor with 10X population and 30X military budget.