Earlier quoted context omitted.
Unit economics make sense, since you don't have to pay a human for every trip. A $500 scooter, with about a $2-$3 charge per trip breaks even in 166-250 trips, which is about 83 days if there are 3 trips a day. So in 2-3 months the devices pay for themselves. Yes there is vandalism and paying chargers, but the general principle stays about the same. And if you have bikes then you don't need chargers, just occasional…
Using your numbers, that's $6-9 of total gross revenue per day, with up to 3 pickup/charge/redeploy charges per day. That would mean a lot of days with a net operating loss even before fixed costs and debt service are considered.
Lime's scooters have a 20 mile range and charge $.15/min + $1 per use[1]. So assuming an average speed of 10mph, using the full battery would be 120 minutes of use, which is $18. Then you add the $1 unlock fees which would of happened multiple times, and you have something of at least $20 average gross revenue per day of a 'fully used scooter'.
These scooter companies probably have better data on average usage, which is probably why they are getting such huge funding amounts due to the $$$ potential.