I think therein lies the rub: A lot of activity could transpire in 1-2 hours, after one is fully charged even though upon arrival I am the only one there. I Supercharged all the way to Denver and back in June, hitting 13 different Superchargers with 16 visits. I saw 3 other Teslas; my stays were 30-45 minutes. Contrast that experience with my two most recent journeys: Oxnard had one car charging when I arrived, and six cars (including mine) when I drove off 35 minutes later. Rancho Cucamonga had 3 cars charging when I arrived, and 8 when I left 40 minutes later. Ft. Tejon had two cars charging when I arrived; I stayed with my vehicle for 50 minutes; two drove off, and three more arrived.
Yes, it is a hassle to walk a quarter-mile to shop or eat, interrupt your activities after 45 minutes just to move your car, and then walk back and resume. But you know, in the bad old days of parking meters, many had a one-hour time limit, so we were forced to return to our cars every hour to put another dime into the slot if we still had unfinished business, or risk a $25 parking violation (a lot of money for most) in the '60s.