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All depends on the intended use. On one extreme, someone that intends to use the car such that they are using commercial chargers for the majority of the car's use - aren't going to save much at all, and might even be spending more over time than a fuel-efficient gas car. And there are the additional hurdles described, like finding the chargers, waiting for the charge time, etc.
The other extreme is someone who charges almost exclusively at home. After the one-time cost to get their house outfitted, their cost is directly aligned with the cost of their electricity. Cheaper areas are going to save more - but even high-priced residential can still be significantly less than fuel costs, especially if the power provider offers options for different time-based costs that you can align the car charging with. And - compared to the first example, there is no extra time to leave the house and get fuelled up, there's no incurred charging time cost, it's always ready to go.
Those in the first bucket who haven't thought this through might be disappointed - those in the second are in much better shape. By the time a higher portion of the fleet on the road is electric, perhaps the competition in the commercial charging space will be such that the costs will not remain at the multiple they are now of residential, but only time will tell.
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