Commute is part of the work day, but unpaid. In fact, avoiding commutes in big cities are one of the main advantages of remote work. In some cases, it is nearly, or even more, two hours back and forth an office or a plant. If people could go to the irs jobs just with a 15-20 minutes walk, it would be a very different issue, but mainly is an hour of traffice jams or packed metros and buses.
If commute should was part of the daily hours, we would see employers preoccupied because there would be people working 6 hours or less in the office or the plant, so they would ask for better transit systems and more affordable housing that implied nota having to go to live 40-50 km away because prices are unpayable nearer. Many of them would allow remote work more easily.