Let's say I have a 5V battery connected in the manner shown in the diagram. I've tried this setup with all sorts of things like pouring brine(salt water) into the soil to decrease its resistance so that the current flows through it, (I mean electrons flow from the ground and neutralize the positive charge as happens in the case of charging by induction when the second sphere is connected to ground) and the battery dies but nothing of that sort actually happens. I understand how charging metallic spheres by induction works(in the case of inducing a negative charge on the second sphere when it's connected to the ground) but i want to know -
Why don't electrons flow from the ground to the positive terminal of the battery and neutralize it even though the positive terminal is at a higher potential than the ground by 5 volts and the ground is universally at a potential of 0V ?
is my current understanding of potentials (as I've used in the figure) correct or am I missing something?
Any help is greatly appreciated.