Just a small correction to the Zellers section.
Zellers continued to sell Atari 2600 video games into the early 1990's (in some stores, later, until stock ran out).
I don't remember seeing "pirate" games, but they did have games from Atari, Epyx, Activision, and M-Network. Presumably at some point they began to distribute the "official" games.
When I first got back into collecting (about 1991 or so), I bought up most of the stock remaining at my local store.













