The analogy is off. Bus vs. car riding on the road is equivalent to the packets which ride on top of the underlying internet infrastructure. That some people group their information into the same packet (a bus) vs. dedicating the packet to themselves (a car) isn't relevant to the discussion around why the cost of transporting the packet is based on the destination.
Imagine if all the roads were toll roads. Regardless of whether you take a bus, car, taxi, bicycle, etc. the toll is waived if you're traveling to McDonald's whereas you have to pay the toll if you're traveling to Burger King. Shouldn't it be like electricity where you pay per kilowatt-hour regardless of the use? Or should powering, say, Sony devices cost you nothing but you get charged for powering other devices?
Imagine if all the roads were toll roads. Regardless of whether you take a bus, car, taxi, bicycle, etc. the toll is waived if you're traveling to McDonald's whereas you have to pay the toll if you're traveling to Burger King. Shouldn't it be like electricity where you pay per kilowatt-hour regardless of the use? Or should powering, say, Sony devices cost you nothing but you get charged for powering other devices?