Taxi could be more expensive than Uber for the same reason AirBnB is cheaper than hotels: they do not respect the same standards (e.g. insurance, worker rights,

Taxi could be more expensive than Uber for the same reason AirBnB is cheaper than hotels: they do not respect the same standards (e.g. insurance, worker rights, etc). Not same this is the case, but there's more than convenience embedded in markets.