While I support the idea, I think it could be implemented with more flexibility. For instance, the fee should only be invoked if a SC site is at least, say, 50% occupied. This will be frustrating in SC's where there are currently very rarely more than one Tesla and you're having dinner far from the chargers and have to get up half way through to move the car.
EDIT: @RK9090 - Was typing as you posted similar thoughts.
EDIT: @RK9090 - Was typing as you posted similar thoughts.