Very simple, have you ever rode a scooter? Once I took a ride along the beach in Southern California, it was immediately obvious, and, I was hooked! It's a disruptive, perfect combination of technologies, that immediately antiquates riding a bike for short distances. The main problem is that it's too good, and people with poor balance, poor judgement, or bad luck, have been in accidents which ruined it for everyone else.
I could see scooters completely wiping out local ride-share, taxi, and bicycle shares in many places.
But again, people have been injured and because of that, along with the excessive inventory that has littered some areas, cities are cracking down and writing new regulation to curb their use. In the short term they will win and we might not enjoy their full potential for awhile.