> The time value of a slot at a gas pump is ~$0.07 per fill up

I think charging stations have an asset that you have neglected to consider: a captive audience.

Yeah, there will always be people who plug in their car and then scroll for half an hour. But there are also people who would be interested in grabbing a bite to eat, walking around, spending money on something dumb, etc. Having a charging station be a place that you can spend money on human amenities in addition to charging improves the economics.

But instead our charging stations are like, three plugs in the back of a hotel parking lot.