Also, if you tried to turn the wheels while at a stop it would cause the wheels to skid. There'd be a lot of friction in general. Ccoordinating the right and left wheels might be complicated enough you'd need to give each wheel its own power steering unit and have drive-by-wire. (Canoo is making a drive-by-wire car, so I guess it's not a regulatory impossibility these days.)
Other drive options include electric hub motors, or just sticking with rear-wheel drive.
"EasyTurn is suitable for vehicles with rear-wheel drive, the usual setup in electric cars."
*The usual setup for luxury/performance electric cars.
Most of the lower end is FWD. The lowest end is all front wheel drive, since they're built on FWD ICE/hybrid chassis, with electric motors put where the ICE used to be. For example, the traction control light in my Fiat 500e rarely turns off. ;)
That's neat it's independent though. I imagine it has a hard time getting stuck, even though I doubt most use it outside the concrete jungle.
Most small cars with petrol engines have nowhere near enough space for the wheel to turn like that.