The lower-friction result is that the offices become huge apartment buildings with reverse-commutes to the suburbs, hoping the "stuff to walk to" survives. There are issues with that too, like plumbing and windows.
most of those issues will be very expensive or insurmountable for most high-rises -- a non-starter
you're basically rebuilding from scratch at that point.
most of those issues will be very expensive or insurmountable for most high-rises -- a non-starter
you're basically rebuilding from scratch at that point.