Careful what you wish for, Uber is in a lot of trouble in a lot of places. Toronto let them drive with regular DL's...now after a couple deaths and numerous other issues Toronto in bringing back the requirement for a professional licence.
Uber and Lyft have both finally admitted that in the cities where they operate they do contribute to increased traffic congestion and pollution, at least in North America.
Kater is a co-operative of taxi licences that the companies couldn't put on the road as regular taxi's...they don't have the drivers for them. The only thing hey have in common is the dispatch system. Drivers are even paid at different rates throughout the Kater system. All of them have to have chauffeurs permits for each of the municipalities they drive in.
If Uber comes, and I believe they will, Kater will collapse. About 80% of the Kater drivers already have the Uber or Lyft apps on their phones ready to drive for either or both of the companies. I can only guess as to how many of the cabbies that are lease drivers are in the same position. You might see Uber and Lyft on the road as a bonus, but how much if it means a reduction in the cab fleet by the same amount....and you end up with the same drivers.