Yeah but they're somewhat less convenient, you never know the quality of the bikes or whether there will be one available, and over time it's usually far more expensive (I literally just did this calculation for myself in DC, took about 6m of daily commuting to be even and then after that you're saving money). Luckily I work in a neighborhood crawling with cops so there is very little risk when I lock my scooter outside, but I definitely don't take it to other neighborhoods and leave it outside (I've had some funny conversations checking it with the coatcheck at events after work).