Food from multiple suppliers is easy to put on trucks going to multiple shops using same roads. Road are workable shared access medium. Water really is not. Unless you deliver it in tanker trucks using roads.
Electricity itself is fungible in moment, so electricity can used shared access medium of grid. But similarly it makes little sense to have multiple roads in densely build areas. So both roads and water pipes end up as natural monopolies in build up areas.
Electricity itself is fungible in moment, so electricity can used shared access medium of grid. But similarly it makes little sense to have multiple roads in densely build areas. So both roads and water pipes end up as natural monopolies in build up areas.