Why Canadian cities didn't suffer as Detroit did

Jason Hackworth, a professor of urban geography at the University of Toronto, gave a guest lecture at the University of Michigan recently to pose a provocative question: "Why is there no Detroit in Canada?" That is, in a nation where industrial decline was often as common as in the American heartland, why don't Canadian cities show the same level of blight and abandonment as we see in Detroit and Flint and in other post-industrial U.S. cities?