I love more charging stations, but I agree with this skepticism, 7-11 tend to be very quick stops ? If 7-11 builds chargers at my nearest location, I'll occupy them happily and walk home while charging. And perhaps I'll enter 7-11 on the drop-off or pick-up trip ?

I have a plug-in hybrid (Volt) and live in an apartment complex without chargers, and I use the abundant shopping mall chargers at Valley Fair mall in San Jose, CA as you describe. I live close enough to walk home 1 mile from the mall, so I'll drop car off, then go into mall to pickup a meal at the nice food court or browse around. Probably as 7-11 hopes: I'll readily spend $10-$15 on food, while charging $5.

My unique fit here is that Valley Fair is an urban mall: it's close to my apartment in healthy walking distance, and it has dense multi-level parking structures, so I'm not walking out and back through a vast mall parking lot.

Movie theaters in malls map well to charging stations because of the 2 hour duration you are inside, for when people go inside movie theaters again ($AMC?) Offices and workplace charging work well for me too (when not WFH)