Net metering involves buying and selling kWh. If there are fixed infrastructure costs involved, the companies involved should bill for those separately.

I buy my car from company A and my gasoline from company B with clear prices for A and B.

Why is the scenario where the car company provides my gasoline and then bills for both gasoline and the car in an opaque "single bill" manner, where I can never make out which is which preferable for the consumer?