[vidarh]

I don't know about where you live, but where I live (London) the black cabs face competition from dozens of minicab companies everywhere, and most of them have apps, and there are aggregatd services. The only thing the black cabs have a monopoly on is picking up people off the street without a booking or from taxi stands; but given that in most cities here a minicab company is a few minutes walk away, and usually having one come to you will take minutes, I use minicabs more often than I use black cabs.

That said, the service I get from black taxis is routinely better.

As for other incentives: They get dictated improvements and failing to make the required changes will cost them their license.