Heating/cooling 100 homes vs 1 office favours the office, but the commute tips it in favour of WFH. So why not fix the commute? Let people live/work/play in den

Heating/cooling 100 homes vs 1 office favours the office, but the commute tips it in favour of WFH. So why not fix the commute? Let people live/work/play in dense urban environments rather than commute individually from live-zone to work-zone.