I think charging companies should look at Nolan Bushnell, the original founder of Atari. Once he sold Atari to Warner Brothers, he had to sign a non-compete contract that kept him out of the video game industry for a period of time (I think it was ten years, but I'm too lazy to check right now).
Anyway, like a lot of people, he decided to look into the restaurant industry... specifically fast food. At the time America's favorite "fast foods" were burgers, hot dogs, and pizza. He wondered why there were SO many places that sold burgers and hot dogs, but very few "fast food" places that served pizza.
Once he did some research, he discovered that although there are plenty of ways to quickly prepare and serve burgers and hot dogs, you just can't make a pizza any faster than the way it was made. So, rather than come up with a way to make the pizza faster, he came up with a way to keep people occupied while their pizza was being prepared... and that's how Chuck E. Cheese was born.
Similar thought could go into charging stations. Give the customer something to do while his vehicle charges. Video games, food, a library... anything to kill time (just NOT a bar, thank you very much). I think that would work out very well.
Hell, most highway truck stops already have everything in place EXCEPT charging stations. Start with those.