[isbvhodnvemrwvn]

Office buildings are typically not suitable for conversion into apartments, there are no provisions for things like individual bathrooms or kitchens.

[bombcar]

Even if they could be converted (and most buildings after a certain height are basically the same except for the interior) they'd likely be torn down and rebuilt; if they even can be due to zoning.

People love to hate on zoning but there are reasons for it, even if the way it's done isn't perfect by a long shot.