What happened to those is people want to have the flexibility to move around independently of their jobs. You can still see those in Montreal -- one tower my fr

What happened to those is people want to have the flexibility to move around independently of their jobs. You can still see those in Montreal -- one tower my friend lives in has offices on the middle twenty floors, grocery and shopping on the bottom three, parking in the five basement floors, and the top twenty floors are for residential (with a restaurant on the top two, because imagine the view!). It's not a bad place to live and work, but, he just happens to not work there -- his workplace is a tower three blocks away.