If you want to restrict a booming city to midrise, then it has to be midrise everywhere. That is what makes Paris work. But in Toronto we allow rich homeowners to hoard 75% (?) of the City's land area as Neighbourhoods (the so-called "traditional single family neighbourhoods") which means the population growth is forced into very small areas near transit and growth centres, at huge heights and density. That's the tradeoff. Toronto cannot protect the Neighbourhoods while also preserving a midrise character in the centres and on key streets/