Let's use your analogy then.....When we buy a new car, the price isn't based on how much we use it. The price is fixed.
If you couldn't afford to - or you decided not to use any fuel for your car, you'd pay nothing.
With a standing charge (that you seem to think is a worthy idea):
"Well Mr Bomber, we can see that you haven't put any fuel in your car for 3 days, sorry you couldn't afford to.
However, the infrastructure has to be paid for - it costs us money to deliver fuel to the forecourts....the fuel was there for you to use. Never mind that you didn't...we want money for the 3 days when you could have been using fuel".
That, I put it to you, would be as much of a nonsense as charging energy customers for NOT using fuel.

