If I was in the market for a short-range, low-speed, easy to ride and store, urban transport that I didn't have to pedal much, I would just get a battery-powered bicycle. There are a ton of those around at a fraction of the cost of even a small scooter. You don't need a DMV license, no insurance, any bicycle will go as fast as an electric scooter, they are easy to carry into buildings, can be recharged anywhere, including at your desk at work, you don't need to work up a sweat to get somewhere, etc., etc,. And, with the advances in power trains, such as Li batteries and small hub motors, an electric bicycle can be not much heavier than a regular mountain or other rugged bike (which is what you want anyway for riding in most cities).
So I see scooters as the auto or motorcycle designer's way of getting their wares into auto shows on the cheap, but the electric bike seems like the more practical and affordable choice for individual urban transportation to me.