I also don't get what's wrong with walking. For me, personally, it's the best mode of transportation in the 15 - 30 minute range (granted, on a nice day in a city that's made for walking).
To each his own, I guess.
Capital intensive would have been more accurate. And in terms of maintenance, too, it’s more expensive than a road. Its economics only balance above a certain density threshold.
Shit needs to be channeled away and cleaned, electricity and networks need to be provided, water has to be served, etc.
Public transport is not different. And calculated on the amount of people it serves I'd argue that it's cheaper than cars. Especially if the externalities are factored in.
I'm not saying that scooters can't add something to the mix if done right. But the situation - as is - is not as bad as you make it out. Especially for cities that do it right.
Seems to me that scooters (or bikeshares etc) are highly complementary to mass transit, since you're never going to get rail lines everywhere.
Cities that aren’t big at all like Bern really show off the advantage of mass transit infrastructure.
Big, bad investment decisions have systemic effects.
In any case, the worry about scooters is overblown. They are an experiment. If it works, we gain a new transportation mode between walking (uncomfortable), cars (cause congestion) and mass transit (expensive).