Toronto's lake orientation, with the CBD at the edge, means commutes are necessarily about twice as bad as in a city like Stockholm that radiates 360 degrees from the core.
At 8 million or whatever the metro area population now is, this starts to create anomalies in a city with no substantial belt of prewar midrise density. The towers are a logical outgrowth, and favoured by planners as well.
Here, where the core is rigourously policed in terms of disallowing highrise construction, prices in buildings like the one below can hit USD 1,600/square foot.