So it’s just how electricity works. With an ICE engine you have a powerband, and the individual gears solve the issue of power and efficiency.

CVTs also solve this issue by putting the ICE motor at peak rpm efficiency for the task. Eventually with an ICE motor the rpm’s can only go so low or else you’ll lug the motor introducing extra heat and pressure that will blow it up.

Back to electric, what happens when you turn a switch on in a room to power a light or fan? Why are fan settings 0-3-2-1 and not 0-1-2-3?

It’s because motors are designed to come on at full power to overcome mass. If you were to introduce a taller gear set like an ICE motor, even at higher speed, you’re introducing the motor to higher resistance than the voltage can overcome so it puts extra stress on the electric motor which in turn increases the amperage.

This will consume more power, and create excess heat, thus lowering efficiency. Not to mention the vehicle has to overcome drag and air resistance and the extra weight of this new drivetrain on an already heavy vehicle.

Now, that’s not to say it isn’t impossible or impractical, but there’s no real efficiency to be gained since electric motors maintain same or similar efficiency across all ranges.