Generally it's the hassle of getting it because in car-centric American cities, the rent-for-a-day renting process isn't streamlined. Rental companies aren't convenient (or possible) to walk/bus to so you need to get there somehow. Which means you need a main car already, or you have to bug a neighbour/friend and do it on their schedule and not yours. The ability to be like "oh, I've got a spare hour here, I'm gonna go grab that lumber I need next weekend" isn't possible anymore.

So at the end of the day, you need a car, period. I live in a midsize American city after living in a major Canadian downtown and wish we didn't need the car (we both bike a lot), but I really do. And personally, an electric pick-up is gonna be mighty appealing for my next car in however-many years because it removes the main reason I've never gotten one before: gas. I can only imagine how big a win the lack of gas is gonna be outside of America where gas is hilariously cheap.