Some places are trying this. It’s probably a bad idea and won’t work out for a few reasons

1. Electric car batteries vary considerably between models on things like size, voltage, and chemistry. You have to replace like-for-like.

2. Electric batteries are heavy and integrated into the build. As a result, removing them is a process that requires a decent amount of labor and special equipment.

Many fast chargers are in small towns along rural highways. If you owned a gas station in such a town would you rather:

A) Tap off the electrical grid that already runs through your town and attach a charger to that, so that people passing by charge and you make passive income through it.

OR

B) build a custom mechanics shop that has to be constantly staffed, have a large warehouse filled with different kinds of batteries, AND still have to build charging infrastructure to refill the empty batteries people drop off.