anti-democratic patronage/rent-seeking system or the other massive, institutionalized abuses that governments do.
Yeah why can't the little guy (who is the biggest taxi company in the world) just be left in peace to break the law for long enough to form a monopoly and put all those guys who currently make a living driving a taxi out of a job?
Besides it should be fairly obvious that with taxis supply is never going to match demand because sometimes an utterly absurd number of people need taxis, often at the same time in the same place where the streets are already full of people and vehicles. It becomes literally impossible to move, say at a large sporting event.
The only difference between a car salesman and a computer salesman is that the car salesman knows he's lying.