I think it’s probably because people in North America generally really like cold water. Virtually every restaraunt will serve all their drinks with ice cubes. I personally find ice-cold water be rather unpleasant, maybe except when it’s 30°C outside. These water fountains will refrigerate the water before it’s despensed and they have a solenoid to control the water flow, meaning it takes very little force to activate.
I’ve seen the EZS8L with a spout on top for us bottle filling homies. 😎️