Thank you for injecting some sanity back into the discussion.
From all I've heard, the kWh cost isn't really what you're paying for with the larger battery, and definitely not if you have the smallest battery and enable Supercharging.
That money is paying for the infrastructure of the SC network build-out, even more so now that the numbers are going to be doubling in short order.
To me, this is all moot, since I'll be getting the largest battery (and probably at least Performance, if not Ludicrous) anyway.
But people need to let go the pay-per-use notion. IF they even consider temporarily enabling SC access, it will be time-based, to sidestep the regulatory tanglings involved with selling electrons in some states. I can see you logging in and pre-paying for a week, 2 week, or one month period from your vehicle.
But there is absolutely no way they will build out "pay at the pump" (for lack of a better term).
Can you imagine the bedlam that would cause if the system went down and the SC's stopped putting out power? Nope.....not gonna happen.