You have to keep in mind the scenarios where it will be used. While truly fast charging does exist today (20 minutes or so for 80% charge), that is not widespread, nor is that the way it's typically done. Level 3 (DC fast charging) is expensive (moreso than gas), potentially detrimental to the battery, and still usually not very fast (an hour at least). As such, you aren't going to charge at your local gas station the same way you get a fill up today.
Most people use a level 2 charger, either at home or at work. This means it can sit for 8 hours to refuel. Many parking garages have this as well. Level 2 chargers deliver AC directly to the vehicle, meaning you don't need a lot of infrastructure- just a 240v line and a billing system. This in turn means it's cheap and relatively easy to install. Sometimes you'll see these outside of Starbucks or a grocery store, but not especially often. You'll get ~25 miles of range per hour charging using level 2. But even if you spend 2 hours drinking coffee, or buying groceries, you've only added 50 miles of range.
This is where level 3 comes in. It requires some pretty significant equipment (which is part of why they're always broken), because it has to convert AC into high voltage DC. It also has to chill the cables internally, otherwise they'd quickly overheat from the electricity passing through. But this takes up space that's probably not really available in the lot.
I am seeing fast chargers now being installed at travel centers/truck stops along major highways. It fits in nicely with regular stops on a road trip for food. I'm also seeing them being installed at most Walmarts, since that's perfect for grocery shopping.
Around here, that last group has been from Electrify America, which does NOT require an app. They have a standard credit card reader.