The majority of people will indeed prefer powered bicycle and scooters if available. There are some countries and cities where there many people using bikes for their daily commute. The scooters are too small and underpowered for riding on the streets, and at the same time using them on the sidewalk can be dangerous for pedestrians, so I am not sure where they fit in the transportation picture.
The hundreds of thousands of people using them (who would never regularly use a bike) seem to disagree that they don't fit in the picture. Why go against a solution that takes cars off the road? Sure let's get scooters off the sidewalks, that's insane. Over here in Lisbon there are plenty of people riding them on streets and (previously deserted) bike lanes.
