Well, I have to disagree with the "tax issues being fixed". If you are referring to a higher rate or COM taxation in Toronto, it can be done because all the talent is focused in the core of the city, or at least a lot of it. Urban land economic theory shows that companies group in locations together in order to have access to other talent close by, as well as other needed services. For example, the banks need lawyers, accouting firms, and a pool of talented people in similar industries in order to thrive, therefore the city can change a higher rate than say Mississauga for example if they so choose, since a lot of high level talent is located already downtown, and despite the investor driven market, we are getting more and more highly trained and qualified people for many industries including high finance, IT, etc.. And I defiantly do not buy that if the rates are slightly higher, all the talent will just uproot and move out. That costs a lot to relocate entire firms, and unless everyone decides to do it at once, there will still be a huge pool of talent and companies that rely on each other in the core. Its not going to be simply the taxes that keep Toronto's core from being comparable in employment to Chicago's core, it will probably be more like, historical reasons, governmental set up (municipally, and at the state level), the size of the economy in the US, the location to other major markets cores...etc. (For location, I think Toronto is quite ideal actually in its proximity to other large markets.)