I think it's a social engineering problem. If the scooters didn't get routinely destroyed by people 1. smashing them into curbs because it's fun or 2 tossing them in the river because they're obnoxious / blocking the sidewalk, I believe they'd be already be profitable, or at least close.
People hate the scooters. People who ride the scooters hate the scooters. Hell, I like the scooters, and I hate the scooters. :-)
I would also like to see them ticketing the riders for reckless driving/endangering of the people. I almost had an accident 2 weeks ago because some stupid riders decided to race on the street. I also see some of them riding in the sidewalks zipping through pedestrians and many times hitting their bags.
And you’ll see that most scooter riders on sidewalks are going max speed. It has made walking in cities with these things a lot more annoying, and it was already bad enough with cars but at least cars are separated from walkers.