Depends a bit ... if the bus is an offer only for those that have no alternatives and have to take the bus, then yes ... there is no point for a commercial operator to spend money on shelters. If the bus is one out of several alternatives (which we increasingly see in Norway - car-owners take the bus to avoid traffic jams, to avoid parking problems, to spend time on the telephone instead of driving, to avoid road tolls, etc), then comfort may be important and it may be profitable to build a proper shelter.

There is of course a complicating factor here, several bus operators may use the same bus stop. Even here in Oslo, where almost all public transport is organized by the county we see that - same bus stops are used by the expensive commercial airport express buses, long-distance and even international buses, free buses going to IKEA and other shopping centers, etc.