I think the advantage of rental is the ability to drop off or pick up anywhere -- you can ride a scooter to the office, walk or bus to a restaurant after work, then rent a different scooter home. Or you might take a scooter from work to the restaurant, and you don't need to worry about parking the rental scooter securely or carrying it around with you.
But that only works if scooters are ubiquitous enough that you can find one when you want one.
This model works with cars (e.g. ZipCar) but with scooters I don't see how this is possible, unless the entire city is quite literally littered with scooters.
If I have to walk 5-10 min to the nearest car which I can unlock from my phone and then use to drive 5 miles somewhere then it's great, but if I have to walk 5-10 minutes to the nearest scooter pickup so I can scooter somewhere for 5-10 minutes then it sort of defeats the whole point.
If you have to walk 3 blocks for a scooter, then they really aren't "ubiquitous", I'm not a scooter user, but they seem to litter the sidewalks around here, so it's usually only a 1 or 2 minute walk.
As you said, if it's much longer than that, then there's no point -- I don't think I'd want to ride a scooter more than a mile or so anyway, so if it takes me 10 minutes to find one, I may as well just walk the whole way.
Even in LA which has a huge number of scooters, there's been times where I've scooted someplace then when I turn around to leave someone unlocked it.
If it's getting later in the day most of the scooters you find are going to be scattered in all sorts of very strange areas, many times in gated apartments, and/or with not enough charge to get you home. Or maybe you have to settle for that scooter with the screen dangling out of it by the wires and the handlebars at 45* relative to the wheel that everyone else was just not desperate enough to use.
Even with that napkin math, the value to not have to own the asset, insure it against theft, or carry it around constantly is still worth it to some consumers. The spontaneity of "hop on and ride, then forget about it" is the appeal.
This. A friend of mine bought one but still rides some from times to times when its practical. He also owns a car but still rides uber from times to times.
Assuming the following:
Cost to buy: $500
Cost to charge $0.40/day (maybe generous)
Cost to Rent: $2/day
Rental Mileage: $0.15/min
Assume 10mph average, (10 miles/day) $9/day
Total: $11/day to rent
2x/week,50 weeks
100 days (200 rides):
Buy: $540
Rent: $1100
No way it’s economical to rent scooters routinely. Even if you break your scooter every 6 months, you can still save by buying a new one.
And who wants to ride scooters you know are abused? Heck, I rode one and the brakes didn’t work.