They would make something less beautiful so that it would fit in better with Toronto's urbanscape. If too many attractive buildings and public spaces congregate together in 'the big smoke', locals will get confused and think they're somewhere else. It would go against Toronto's world-class identity.
It all starts with asking/requesting/hoping for attractive buildings. It's a down (up?) ward spiral. Next thing you know, people will start demanding proper sidewalks, street furniture, smooth roads, improved transit, etc. One has to draw the line somewhere. In Toronto's case, nothing more than a few nice things here and there (but not everywhere) shall keep our urbanscape intact!
Now repeat after me, "I heart Tronna."