We would not automatically exclude any activity or sector. A cargo bike is a means of transport like any other, with a very wide range of possibilities. Vans will always be necessary for certain volumes, and it might be worth considering vehicle sharing schemes such as Remorquable or Cambio.
In Brussels, for example, there are already a locksmith, nurses and midwives who travel by bike, as well as bike-based waste collection, meal deliveries and window-cleaning services.