The cost difference between Telstra and Telus/Bell/Rogers is double, but over a month tens of dollars is not a significant part of a budget, and when consuming video &c there's really not that much different between 30 - 40 GB (unlimited is another story). For people on a very limited budget, there are lower cost plans, but even with the Telstra plan it's not comparable to wired.
Don't get me wrong, I think Canada, right or wrong, coddles these big carriers as a defence against international players, which creates an uneven playing field here (sharing infrastructure at competitive rates seemed like a fair recourse). I am just trying to bring more perspective to the table than "Ontario has a high density so should be cheap," besides the obvious "we are not just talking about Ontario or Toronto here."
Wired is the real thing to discuss here, and what may get lost in the shuffle.