It's the same answer for why so many more bicyclists are killed by cars in America than Europe. We need protected lanes that are separated from cars by more than paint.
https://peopleforbikes.org/blog/14-ways-to-make-bike-lanes-b...
It's a lot simpler for bicycles and scooters to live side by side than either of them with cars.
Some basics like safety standards for rented transportation are even easier.