They are not 'ride sharing' or 'car pooling' or anything even similar.
The business model is old and well established,at least in london.
It means a cab service that does not use fully licensed drivers and vehicles, and cannot be just hailed on the street (must be booked).
The fact that they take most of their bookings from phone apps/online makes no difference at all.
It is just a private hire of transport service - they dont use cab ranks, they cannot pick up people who hail them.
Perhaps if they had admitted this to begin with, they would not have faced the legal hurdles they have.