I think the only thing keeping top loaders sticking around is that they are cheap machines. (The conventional center post agitator ones that is.) The tooling is all still there, so the washer manufacturers will probably still be making machines until the tooling completely wears out.
At the local Future Shop, I happened to see a "Estate" (Aka BOL Whirlpool. Have no idea why it's just not Inglis.) washer/dryer set. I opened the lid and was very surprised to see a black with white speckles porcelain tub, just like what my parents old 60's era Filter Flo used to have. It uses a "Reduced water level" on washes and rinses apparently, but that could probably be fixed by adjusting a screw on the pressure switch.
It looked like a standard capacity washer, but I seem to recall that it sold for just a shade over $300, which is a downright bargain considering that GE's BOL washers have a plastic tub and sell for a shade just under $400 here.
I think Toploaders are going to stick around for a while, especially with washplate washers entering in the scene. Some people swear by them, some people swear at them.. But I think Washplate machines are going to spurn on the popularity of front loaders due to their low effectiveness.
I don't think the Canadian Government will ever go out of their way to ban top loaders outright. If they ever do, I'll be really surprised.