On the positive side of things...
One of my personal favourite places for obscure gear, Sayal Electronics, is not only doing well but has been quietly expanding.
Unknown to inner city types, the original opened next to Active's Mississauga store. Frequently frustrated by Active's not having what I wanted, I'd go to Sayal which always had what I needed and eventually became my first stop in that plaza.
That location is still doing well, obviously having outlasted Active. Their main location and head office remains on Victoria Park north of Finch (very close to where Electrosonic used to be) but they also have locations in Markham and near Vaughan Mills. And they've also expanded to Barrie, Cambridge and Burlington. Their stores tend to be very large, which might be the reason they prefer industrial zones to city storefronts.
Also: Canada Computers just did a move of its North York location, from a strip mall to Centrepoint Mall (Yonge & Steeles) where it occupies the ENTIRE space formerly used by the Target store. It's immense and when I went there a few weeks ago (though the "official" opening was yesterday) there was plenty of unused area, they could easily fit all of their other Toronto locations into this one spot.
- Evan