According to what I witness in the current comments, a first step for taxis would be to mandate a working credit card machine, under penalties.
However, it seems so many many taxis were frauding their taxes, that it became cultural and enforced.
Which means taxis, which are already known as the top thief job in the world, also steal the citizen on a third level after the ride itself and after choosing the night rate at noon: taxes.
I dare to say Uber, as bad as they can ever be with wages under the legal minimum, can still be a better behaved citizen.